Details of the Researcher

PHOTO

Yuji Sakamoto
Section
Green Goals Initiative
Job title
Specially Appointed Professor(Research)
Degree

  • 博士(工学) (Kyushu University)

Research History 6

  • 2021/04 - 2024/03
    Hokkaido University　Faculty of Engineering

  • 2024/04 - Present
    Tohoku University　Green Goals Initiative　Specially Appointed Professor

  • 2023/01 - 2024/03
    Muroran Institute of Technology

  • 2015/04 - 2021/03
    Tohoku University　Graduate School of Engineering

  • 2007/04 - 2015/03
    Tohoku University　Graduate School of Engineering

  • 2006/04 - 2007/03
    Tohoku University　Graduate School of Engineering

Show all Show first 5

Professional Memberships 1

  • 日本航空宇宙学会

Research Interests 5

  • 姿勢制御

  • 姿勢決定

  • 軌道決定

  • 衛星システム

  • 人工衛星

Research Areas 1

  • Aerospace, marine, and maritime Engineering / Aerospace engineering /

Papers 147

  1. On the low-cost asynchronous one-way range measurement method and the device for micro to nano deep space probes

    Junichiro Kawaguchi, Masahiro Fujita, Shinya Fujita, Yuji Sakamoto, Toshinori Kuwahara, Kazuya Yoshida, Shingo Nishimoto, Kohei Takeda, Saki Komachi, Kokubo Hayato

    ACTA ASTRONAUTICA　214　457-465　2024/01

    DOI： 10.1016/j.actaastro.2023.10.036 　

    ISSN： 0094-5765

    eISSN： 1879-2030

  2. Satellite Data Management System for Earth Observation Microsatellites Peer-reviewed

    Junichi KURIHARA, Yuji SAKAMOTO, Yuji SATO, Shinya FUJITA, Toshinori KUWAHARA, Kazuki KIBUNE, Naoya SHIRAISHI

    Journal of Evolving Space Activities　1　2023/03

    DOI： 10.57350/jesa.19 　

  3. On The Low-Cost Asynchronous One-Way Range Measurement Method and the Device for Micro to Nano Deep Space Probes

    Junichiro Kawaguchi, Masahiro Fujita, Shinya Fujita, Yuji Sakamoto, Toshinori Kuwahara, Kazuya Yoshida

    Proceedings of the International Astronautical Congress, IAC　2022-September　2022

    ISSN： 0074-1795

  4. Development of Spin Stabilization Control System for the Cosmic Dust Observation CubeSat

    Shinya Fujita, Ryo Ishimaru, Yuji Sakamoto, Keisuke Maeda, Osamu Okudaira, Yuji Sato, Toshinori Kuwahara, Takafumi Matsui

    2022 IEEE/SICE International Symposium on System Integration, SII 2022　114-119　2022

    DOI： 10.1109/SII52469.2022.9708909 　

  5. On-orbit Calibration of a Telescope Alignment for Earth Observation using Stars and QUEST

    Shinya Fujita, Yuji Sato, Toshinori Kuwahara, Yuji Sakamoto, Junichi Kurihara

    2022 IEEE/SICE International Symposium on System Integration, SII 2022　120-125　2022

    DOI： 10.1109/SII52469.2022.9708740 　

  6. Lessons Learned from On-orbit Gyroscope Malfunction and Recovery Operation of Microsatellite RISESAT

    Shinya Fujita, Toshinori Kuwahara, Kazuki Kibune, Naoya Shiraishi, Yuji Sato, Yuji Sakamoto, Junichi Kurihara

    2022 IEEE/SICE International Symposium on System Integration, SII 2022　126-131　2022

    DOI： 10.1109/SII52469.2022.9708894 　

  7. Radiometric Calibration for a Multispectral Sensor Onboard RISESAT Microsatellite Based on Lunar Observations

    Masataka Imai, Junichi Kurihara, Toru Kouyama, Toshinori Kuwahara, Shinya Fujita, Yuji Sakamoto, Yuji Sato, Sei-Ichi Saitoh, Takafumi Hirata, Hirokazu Yamamoto, Yukihiro Takahashi

    Sensors　21　(7)　2429-2429　2021/04/01

    Publisher: MDPI AG

    DOI： 10.3390/s21072429 　

    eISSN： 1424-8220

    More details Close

    Radiometric calibration utilizing the Moon as a reference source is termed as lunar calibration. It is a useful method for evaluating the performance of optical sensors onboard satellites orbiting the Earth. Lunar calibration provides sufficient radiometric calibration opportunities without requiring any special equipment, and is suitable for nano/microsatellites. This study applies lunar calibration to a multispectral sensor, Ocean Observation Camera (OOC), on board a microsatellite named Rapid International Scientific Experiment Satellite. Simulating the brightness of the Moon based on the RObotic Lunar Observatory and SELENE/Spectrum Profiler models, sensitivity degradation was proven to be negligible in any of the four spectral bands of the OOC with the sensor temperature correction. A bluing trend in the OOC’s sensor sensitivity was revealed, indicating a shorter observation wavelength shows larger irradiance. Comparing the top-of-atmosphere reflectance of Railroad Valley Playa with the Radiometric Calibration Network dataset revealed that the derived calibration parameter from the lunar calibration was valid for correcting the bluing trend in the visible range. Although the lunar and vicarious calibration parameters for the infrared band were unexpectedly inconsistent, lunar calibration could potentially contribute toward estimating the contaminated background radiance in the Earth observation images.

  8. In-Flight Target Pointing Calibration of the Diwata-2 Earth Observation Microsatellite

    Edgar Paolo Violan, Shinya Fujita, Yuji Sato, Yuji Sakamoto, Julie Ann Banatao, Toshinori Kuwahara, Kazuya Yoshida

    IEEE Aerospace Conference Proceedings　2021-March　2021/03/06

    DOI： 10.1109/AERO50100.2021.9438197 　

    ISSN： 1095-323X

  9. Lunar Calibration and its Validation for a Multispectral Sensor Onboard Risesat Microsatellite.

    Masataka Imai, Junichi Kurihara, Toru Kouyama, Toshinori Kuwahara, Shinya Fujita 0002, Yuji Sakamoto, Sei-Ichi Saitoh, Takafumi Hirata, Hirokazu Yamamoto, Yuji Sato, Yukihiro Takahashi

    IEEE International Geoscience and Remote Sensing Symposium(IGARSS)　7775-7778　2021

    Publisher: IEEE

    DOI： 10.1109/IGARSS47720.2021.9555066 　

  10. On-Board Computers for Micro-Satellites

    Toshinori KUWAHARA, Shinya FUJITA, Yuji SATO, Yoshihiko SIBUYA, Alperen PALA, Hannah TOMIO, Yu MURATA, Yuji SAKAMOTO

    TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN　19　(4)　485-492　2021

    Publisher: Japan Society for Aeronautical and Space Sciences

    DOI： 10.2322/tastj.19.485 　

    eISSN： 1884-0485

  11. Integration and Orbit Demonstration of Micro-Satellite Payload System Based on a Plug-and-Play On-Board Computer

    Morokot SAKAL, Toshinori KUWAHARA, Hannah TOMIO, Yu MURATA, Kosuke HANYU, Shinya FUJITA, Yuji SATO, Yuji SAKAMOTO, Shinichi KIMURA, Junichi KURIHARA

    TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN　19　(5)　784-793　2021

    Publisher: Japan Society for Aeronautical and Space Sciences

    DOI： 10.2322/tastj.19.784 　

    eISSN： 1884-0485

  12. Double Fail-Safe Attitude Control System for Artificial Meteor Microsatellite ALE-1

    Shinya FUJITA, Yuji SATO, Toshinori KUWAHARA, Yuji SAKAMOTO, Yoshihiko SHIBUYA, Koh KAMACHI

    TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN　19　(1)　9-16　2021

    Publisher: Japan Society for Aeronautical and Space Sciences

    DOI： 10.2322/tastj.19.9 　

    eISSN： 1884-0485

  13. Inflight Radiometric Calibration for a Multi-Band Sensor Onboard Risesat with the Moon

    Masataka Imai, Toru Kouyama, Junichi Kurihara, Toshinori Kuwahara, Shinya Fujita, Yuji Sakamoto, Sei Ichi Saitoh, Takafumi Hirata, Yukihiro Takahashi

    International Geoscience and Remote Sensing Symposium (IGARSS)　6222-6225　2020/09/26

    DOI： 10.1109/IGARSS39084.2020.9323468 　

  14. Commercial Uncooled Microbolometer Camera Applied to 50-kg Class Satellite

    Tetsuya Fukuhara, Yuji Sakamoto, Toshinori Kuwahara, Nobuo Sugimura, Kazuya Yoshida, Yukihiro Takahashi

    IEEE GEOSCIENCE AND REMOTE SENSING LETTERS　17　(2)　332-336　2020/02

    DOI： 10.1109/LGRS.2019.2918197 　

    ISSN： 1545-598X

    eISSN： 1558-0571

  15. Convolutional neural network for automated image processing of earth observation microsatellite images

    Julie Ann Banatao, Julius Anthony Banatao, Yuji Sakamoto, Kazuya Yoshida

    Proceedings of the International Astronautical Congress, IAC　2020-October　2020

    ISSN： 0074-1795

  16. Establishment of the Ground Evaluation and Operational Training System of Artificial Meteor Micro-satellite ALE-1

    SATO Yuji, FUJITA Shinya, KUWAHARA Toshinori, HONDA Tomoyuki, SAKAMOTO Yuji, SHIBUYA Yoshihiko, KAMACHI Koh

    TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN　18　(3)　84-92　2020

    Publisher: THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES

    DOI： 10.2322/tastj.18.84 　

    More details Close

    <p>The Space Robotics Laboratory (SRL) of Tohoku University and ALE Co., Ltd. have developed a 60-kg-class microsatellite ALE-1, which generates artificial meteors by releasing meteor source pellets towards the Earth. The purpose of this research is to establish a system for ground evaluation and operation training of ALE-1. This satellite requires an accurate orbit and attitude determination technique for operation safety and mission success. A triple redundant system with multiple independent sensors is adopted for ensuring safe operation. A generic ground evaluation system “MEVIμS” is applied to evaluate such a complicated satellite bus system. MEVIμS has a high reliability and flexibility based on the results of its application to past micro-satellite projects. This system contains a satellite simulator with a space dynamics calculator with a high accuracy as well as mathematical models of the space environment and satellite components. A hardware-in-the-loop simulation can be carried out to evaluate the satellite hardware with on-board software by connecting to the simulator virtually. The performance evaluation of the attitude control system and comprehensive mission operational tests were carried out by MEVIμS. The simulation result demonstrated that ALE-1 reached a sufficient level of attitude control accuracy to realize the mission. The result also confirmed that the mission sequence was performed successfully as the mission feasibility and the operation safety were validated. ALE-1 was launched by the fourth Epsilon rocket on January 18, 2019 and initial operation is in progress. Further improvement of the ALE-1 system can be executed by repeated operation training under various conditions to enhance the chance of mission success.</p>

  17. Attitude Maneuvering Sequence Design of High-Precision Ground Target Tracking Control for Multispectral Earth Observations Peer-reviewed

    Shinya Fujita, Yuji Sato, Toshinori Kuwahara, Yuji Sakamoto, Kazuya Yoshida

    Proceedings of the 2019 IEEE/SICE International Symposium on System Integration, SII 2019　153-158　2019/04

    DOI： 10.1109/SII.2019.8700434 　

    ISSN： 2474-2317

  18. Development and Ground Evaluation of Ground-Target Tracking Control of Microsatellite RISESAT

    Shinya FUJITA, Yuji SATO, Toshinori KUWAHARA, Yuji SAKAMOTO, Kazuya YOSHIDA

    TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN　17　(2)　120-126　2019

    Publisher: Japan Society for Aeronautical and Space Sciences

    DOI： 10.2322/tastj.17.120 　

    eISSN： 1884-0485

  19. Optical communication experiment with microsatellite body-pointing using VSOTA on RISESAT

    Hideki Takenaka, Hiroo Kunimori, Toshinori Kuwahara, Yuji Sakamoto, Shinya Fujita, Homio Tomio, Morokot Sakal, Junichi Kurihara, Toshihiro Kubo-Oka, Tetsu Fuse, Morio Toyoshima

    IET Conference Publications　2019　(CP774)　2019

    DOI： 10.1049/cp.2019.1247 　

  20. Characteristics Evaluation and Performance Improvement Method of Balloon-Borne Telescope Pointing Control System

    Toshihiko NAKANO, Makoto TAGUCHI, Yasuhiro SHOJI, Mao TAKAMURA, Daiki SUNAGUCHI, Masataka IMAI, Makoto WATANABE, Yukihiro TAKAHASHI, Yuji SAKAMOTO, Kazuya YOSHIDA

    TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN　17　(1)　51-56　2019

    Publisher: Japan Society for Aeronautical and Space Sciences

    DOI： 10.2322/tastj.17.51 　

    eISSN： 1884-0485

  21. Development and ground evaluation of optical ground station tracking control system of microsatellite RISESAT

    Shinya Fujita, Yuji Sato, Toshinori Kuwahara, Hiroto Katagiri, Yuji Sakamoto, Kazuya Yoshida, Hiroo Kunimori

    SII 2017 - 2017 IEEE/SICE International Symposium on System Integration　2018-January　201-207　2018/02/01

    DOI： 10.1109/SII.2017.8279212 　

  22. HPT: A High Spatial Resolution Multispectral Sensor for Microsatellite Remote Sensing. Peer-reviewed

    Junichi Kurihara, Yukihiro Takahashi, Yuji Sakamoto, Toshinori Kuwahara, Kazuya Yoshida

    Sensors　18　(2)　619　2018

    DOI： 10.3390/s18020619 　

    eISSN： 1424-8220

  23. On-Ground Verification of Attitude Control System for 50-kg-class Microsatellite Using a Hardware-in-the-Loop-Simulator

    Fujita Shinya, Yuji Sato, Toshinori Kuwahara, Yuji Sakamoto, Kazuya Yoshida

    68th International Astronautical Congress　9　6141-6150　2017/09/25

    ISSN： 0074-1795

  24. Microsatellite bus system technologies of Tohoku University

    Toshinori Kuwahara, Yuji Sakamoto, Shinya Fujita, Yuji Sato, Ryo Taba, Hiroto Katagiri, Masafumi Endo, Pasith Tangdhanakanond, Tomoyuki Honda, Kazuya Yoshida

    1st IAA North East Asia Symposium on Small Satellites　2017/08/21

  25. Sprites identification and their spatial distributions in JEM-GLIMS nadir observations Peer-reviewed

    Mitsuteru Sato, Toru Adachi, Tomoo Ushio, Takeshi Morimoto, Masayuki Kikuchi, Hiroshi Kikuchi, Makoto Suzuki, Atsushi Yamazaki, Yukihiro Takahashi, Ryohei Ishida, Yuji Sakamoto, Kazuya Yoshida, Yasuhide Hobara

    TERRESTRIAL ATMOSPHERIC AND OCEANIC SCIENCES　28　(4)　545-561　2017/08

    DOI： 10.3319/TAO.2016.09.21.02 　

    ISSN： 1017-0839

    eISSN： 2311-7680

  26. Safety assessment and verification results for micro and nano satellites with deployable mechanism

    Yuji Sakamoto, Shinya Fujita, Toshinori Kuwahara, Kazuya Yoshida

    1st IAA North East Asia Symposium on Small Satellites, Ulaanbaatar, Mongolia, Aug. 21 - 23, 2017.　2017/08

  27. Development and Ground Evaluation of Fast Tracking Algorithm for Star Trackers

    Yuji Sato, Toshinori Kuwahara, Shinya Fujita, Yuji Sakamoto, Kazuya Yoshida

    31st International Symposium on Space Technology and Science　16　(3)　2017/06/05

    ISSN： 1884-0485

  28. Development and Flight Operations of Microsatellite Bus System for DIWATA-1

    Yuji SAKAMOTO, Ariston GONZALEZ, John Leur LABRADOR, Gerwin Policarpio GUBA, Harold Bryan PALER, Toshinori KUWAHARA, Kazuya YOSHIDA, Tetsuo ISHIDA, Junichi KURIHARA, Yukihiro TAKAHASHI

    31st International Symposium on Space Technology and Science, Matsuyama, Japan, June 3 - 9, 2017.　2017/06

  29. Design and Implementation of an Attitude Determination Module with Real-Time Sensor Calibration for Small-Satellite Systems Including Performance Verification using DIWATA-1 Flight Data

    Ariston GONZALEZ, Yuji SAKAMOTO, John Leur LABRADOR, Kazuya YOSHIDA, Toshinori KUWAHARA

    31st International Symposium on Space Technology and Science, Matsuyama, Japan, June 3 - 9, 2017.　2017/06

  30. Development of an Improved Micro-Satellite Environment Simulator for Attitude Determination and Control System Verification Through DIWATA-1 Flight Data Analysis

    John Leur LABRADOR, Ariston GONZALEZ, Yuji SAKAMOTO, Toshinori KUWAHARA, Kazuya YOSHIDA

    31st International Symposium on Space Technology and Science, Matsuyama, Japan, June 3 - 9, 2017.　2017/06

  31. Improvement and Verification of Satellite Dynamics Simulator Based on Flight Data Analysis

    Yuji Sato, Shinya Fujita, Toshinori Kuwahara, Hiroto Katagiri, Yuji Sakamoto, Kazuya Yoshida

    2017 IEEE/SICE INTERNATIONAL SYMPOSIUM ON SYSTEM INTEGRATION (SII)　686-691　2017

    ISSN： 2474-2317

  32. Simultaneous observations of optical lightning from space and LF band lightning waveforms from the ground Peer-reviewed

    Hiroshi Kikuchi, Mitsuteru Sato, Tomoo Ushio, Takeshi Morimoto, Masayuki Kikuchi, Atsushi Yamazaki, Makoto Suzuki, Ryohei Ishida, Yuji Sakamoto, Ting Wu, Zen Kawasaki

    GEOPHYSICAL RESEARCH LETTERS　44　(2)　1123-1131　2017/01

    DOI： 10.1002/2016GL071783 　

    ISSN： 0094-8276

    eISSN： 1944-8007

  33. Software Demodulation Technique for the Stora and Forward System of Vietnam’s first Micro-Satellite MicroDragon Peer-reviewed

    Toshinori Kuwahara, James Harpur, Ngo Thanh Cong, Ta Phuong Linh, Tran Van Ninh, Nguyen Minh Thao, Yuji Sakamoto, Kasuya Yoshida, Kaname Kojima, Takahiro Shinke, Tomoya Mochizuki

    31st International Symposium on Space Technology and Science, 3-9 June, 2017, Matsuyama, Japan.　2017

  34. Static Closed Loop Simulation for Ground-Target Tracking Control of Microsatellite RISESAT Peer-reviewed

    Shinya Fujita, Yuji Sato, Toshinori Kuwahara, Yuji Sakamoto, Kazuya Yoshida

    31st International Symposium on Space Technology and Science, 3-9 June, 2017, Matsuyama, Japan.　2017

  35. Improvement of Star Sensor in Generic Test Environment Peer-reviewed

    Nobuo SUGIMURA, Tatsuaki HASHIMOTO, Toshinori KUWAHARA, Yuji SAKAMOTO, Kazuya YOSHIDA, Yuki SATO, Tomohiro TAKANO

    TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN, Vol. 14 (2016) No. ists30, Oct. 2016, Pf_97-Pf_103　2016/10

  36. Development of Reaction Wheels for Cubesats Using a Solid Lubricant Bearing Peer-reviewed

    Shinya FUJITA, Yuji SAKAMOTO, Ryo ISHIMARU, Toshiya GONAI, Kazuya YOSHIDA, Takafumi MATSUI

    TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN, Vol. 14 (2016) No. ists30, Oct. 2016, Pf_113-Pf_118　14　(30)　Pf_113-Pf_118　2016/10

    Publisher: THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES

    DOI： 10.2322/tastj.14.Pf_113 　

    More details Close

    <p>Lubrication of bearings is the most significant element for high-speed rotation of a flywheel in a vacuum environment. This paper proposes a new reaction wheel for cubesats using a solid lubricant bearing. Generally, metal ball bearings and liquid lubricant are used for reaction wheels because liquid lubricant enables stable rotation even in a high-speed range. In contrast, liquid lubricant has a defect that lubrication becomes insufficient when its rotation stops. To protect bearings, it is desirable that a flywheel keeps rotating above a certain speed like momentum wheels. However, this is difficult for cubesats because there is insufficient power supply. To solve this problem, new reaction wheels were developed using polyether ether ketone ball bearings with polytetrafluoroethylene solid lubricant. It can maintain the lubrication effect even if a non-rotational state continues for a long period. Results of this evaluation found that the developed reaction wheel had a maximum torque of 0.189 mNm and a maximum angular momentum of 0.657 mNms. The performance is equivalent when compared to that of conventional-type reaction wheels.</p>

  37. FUJIN-2:Balloon Borne Telescope for Optical Observation of Planets Peer-reviewed

    Yasuhiro SHOJI, Makoto TAGUCHI, Toshihiko NAKANO, Atsunori MAEDA, Masataka IMAI, Yuya GOUDA, Makoto WATANABE, Yukihiro TAKAHASHI, Yuji SAKAMOTO, Kazuya YOSHIDA

    TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN, Vol. 14 (2016) No. ists30, Oct. 2016, Pk_95-Pk_102　14　(ists30)　Pk_95-Pk_102　2016/10

    Publisher: Japan Society for Aeronautical and Space Sciences

    DOI： 10.2322/tastj.14.pk_95 　

    eISSN： 1884-0485

  38. Development and Flight Results of Microsatellite Bus System for RISING-2 Peer-reviewed

    Yuji SAKAMOTO, Nobuo SUGIMURA, Kazufumi FUKUDA, Toshinori KUWAHARA, Kazuya YOSHIDA, Junichi KURIHARA, Tetsuya FUKUHARA, Yukihiro TAKAHASHI

    TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN, Vol. 14 (2016) No. ists30, Oct. 2016, Pf_89-Pf_96.　2016/10

  39. Identification of sprites in JEM-GLIMS nadir observations and their spatial distributions Peer-reviewed

    M. Sato, T. Adachi, T. Ushio, T. Morimoto, M. Kikuchi, H. Kikuchi, M. Suzuki, A. Yamazaki, Y. Takahashi, R. Ishida, Y. Sakamoto, K. Yoshida, Y. Hobara

    Terrestrial, Atmospheric and Oceanic Sciences (TAO), accepted 21 Sep. 2016　2016/09

  40. Design and Implementation of a Thermopile-Based Earth Sensor Peer-reviewed

    Toshinori KUWAHARA, Kazufumi FUKUDA, Nobuo SUGIMURA, Yuji SAKAMOTO, Kazuya YOSHIDA, Arianna DORSA, Pietro PAGANI, Franco Z. BERNELLI

    TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN, Vol. 14 (2016) No. ists30, Sep. 2016, Pf_77-Pf_81　14　(30)　Pf_77-Pf_81　2016/09

    Publisher: THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES

    DOI： 10.2322/tastj.14.Pf_77 　

    More details Close

    <p>In recent years, microsatellites have attracted great attention for their low cost, rapid development, and utilization capability. Demand for more requirements is increasing, and reliable attitude control is indispensable for secure operation. An Earth sensor is typically used to detect the direction of Earth's center relative to the spacecraft's attitude. Unlike Sun sensors, an Earth sensor can be functional even in the eclipse region in orbit, which enables a spacecraft to determine its attitude regardless of orbital position. The thermopile-based Earth sensor developed in this research is designed to have full sky coverage, i.e., it is operational independent of satellite attitude. Therefore, it can be used in safe-hold-mode operation. As a result of this research, an Earth sensor is realized by utilizing multiple thermopile sensors. The geocentric vector can be determined from the output voltages of thermopiles that are mounted on the entire satellite in a distributed manner and pointed in different directions. In order to establish a data processing algorithm, the output voltage and angle characteristics of the sensors were investigated analytically and experimentally. A numerical model of the sensor was developed, and its performance in orbit was evaluated in a software-based simulation and verification environment.</p>

  41. Low-Cost Simulation and Verification Environment for Micro-Satellites Peer-reviewed

    Toshinori KUWAHARA, Kazufumi FUKUDA, Nobuo SUGIMURA, Tatsuaki HASHIMOTO, Yuji SAKAMOTO, Kazuya YOSHIDA

    TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN, Vol. 14 (2016) No. ists30, Sep. 2016, Pf_83-Pf_88　14　(30)　Pf_83-Pf_88　2016/09

    Publisher: THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES

    DOI： 10.2322/tastj.14.Pf_83 　

    More details Close

    <p>The Space Robotics Laboratory (SRL) of Tohoku University has been developing micro-satellites for years and has gained experience in their development, verification, integration, and operation. The SRL has recently started the development of model-based simulation, verification, and integration environment to realize rapid and cost-effective development of reliable micro-satellites. The conceptual design and its functionality have been verified through the real-life 50-kg-class micro-satellite projects RISING-2 and RISESAT. The developed environment can be utilized in different configurations such as full-software simulation, hardware-in-the-loop simulation, and even flight operation, depending on demands in each satellite development phase. This environment is designed to be modular and flexible. The minimum hardware configuration can be a single personal computer, which enables low-cost introduction of a satellite system simulator for a wide range of projects in a variety of project phases. It can be utilized for general micro-satellite missions and possibly even much smaller space systems in the future. Micro-satellite RISING-2 is the first satellite tested by means of this environment. Functionality of the developed simulation and verification environment was evaluated by comparing the ground simulation results and flight data obtained by RISING-2.</p>

  42. An overview of VHF lightning observations by digital interferometry from ISS/JEM-GLIMS Peer-reviewed

    Takeshi Morimoto, Hiroshi Kikuchi, Mitsuteru Sato, Tomoo Ushio, Atsushi Yamazaki, Makoto Suzuki, Ryohei Ishida, Yuji Sakamoto, Kazuya Yoshida, Yasuhide Hobara, Takuki Sano, Takumi Abe, Zen-Ichiro Kawasaki

    EARTH PLANETS AND SPACE　68　145　2016/08

    DOI： 10.1186/s40623-016-0522-1 　

    ISSN： 1880-5981

  43. Direction-of-Arrival Estimation of VHF Signals Recorded on the International Space Station and Simultaneous Observations of Optical Lightning Peer-reviewed

    Hiroshi Kikuchi, Takeshi Morimoto, Mitsuteru Sato, Tomoo Ushio, Masayuki Kikuchi, Atsushi Yamazaki, Makoto Suzuki, Ryohei Ishida, Yuji Sakamoto, Zen Kawasaki

    IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING　54　(7)　3868-3877　2016/07

    DOI： 10.1109/TGRS.2016.2529658 　

    ISSN： 0196-2892

    eISSN： 1558-0644

  44. Horizontal distributions of sprites derived from the JEM-GLIMS nadir observations Peer-reviewed

    M. Sato, M. Mihara, T. Adachi, T. Ushio, T. Morimoto, M. Kikuchi, H. Kikuchi, M. Suzuki, A. Yamazaki, Y. Takahashi, U. Inan, I. Linscott, R. Ishida, Y. Sakamoto, K. Yoshida, Y. Hobara

    JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES　121　(7)　3171-3194　2016/04

    DOI： 10.1002/2015JD024311 　

    ISSN： 2169-897X

    eISSN： 2169-8996

  45. Horizontal distributions of sprites derived fromthe JEM-GLIMS nadir observations Peer-reviewed

    M. Sato, M. Mihara, T. Adachi, T. Ushio, T. Morimoto, M. Kikuchi, H. Kikuchi, M. Suzuki, A. Yamazaki, Y. Takahashi, U. Inan, I. Linscott, R. Ishida, Y. Sakamoto, K. Yoshida, Y. Hobara

    Journal of Geophysical Research　121　(7)　3171-3194　2016

    DOI： 10.1002/2015JD024311 　

    ISSN： 0148-0227

    eISSN： 2156-2202

  46. Operation system for micro and Nano satellites by low-cost ground station network

    Yuji Sakamoto, Ryo Ishimaru, Alvin E. Retamar

    SpaceOps 2016 Conference　2016

    Publisher: American Institute of Aeronautics and Astronautics Inc, AIAA

    DOI： 10.2514/6.2016-2425 　

  47. Flight Verification of Attitude Determination Methods for Microsatellite RISING-2 Using Magnetometers, Sun Sensors, Gyro Sensors, and Observation Images

    Yuji Sakamoto, Nobuo Sugimura, Kazufumi Fukuda, Toshinori Kuwahara, Kazuya Yoshida

    the 30th International Symposium on Space Technology and Science (30th ISTS), Kobe, Japan, July 4 - 10, 2015.　2015/06

  48. Development of Attitude Control System and Testing Simulator for Microsatellite MicroDragon

    Trinh Hoang Quan, Nguyen Son Duong, Nguyen Van Thuc, Le The Soat, Cao Xuan Hiep, Toshinori Kuwahara, Yuji Sakamoto, Kazuya Yoshida, Pham Anh Tuan

    the 30th International Symposium on Space Technology and Science (30th ISTS), Kobe, Japan, July 4 - 10, 2015.　2015/06

  49. Static Closed Loop Simulation of Attitude Control System of Microsatellite RISESAT

    Kazufumi Fukuda, Toshinori Kuwahara, Yuji Sakamoto, Kazuya Yoshida

    the 30th International Symposium on Space Technology and Science (30th ISTS), Kobe, Japan, July 4 - 10, 2015.　2015/06

  50. Overview and early results of the Global Lightning and Sprite Measurements mission Peer-reviewed

    M. Sato, T. Ushio, T. Morimoto, M. Kikuchi, H. Kikuchi, T. Adachi, M. Suzuki, A. Yamazaki, Y. Takahashi, U. Inan, I. Linscott, R. Ishida, Y. Sakamoto, K. Yoshida, Y. Hobara, T. Sano, T. Abe, M. Nakamura, H. Oda, Z. -I. Kawasaki

    JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES　120　(9)　3822-3851　2015/05

    DOI： 10.1002/2014JD022428 　

    ISSN： 2169-897X

    eISSN： 2169-8996

  51. Overview and early results of the global lightning and sprite measurements mission Peer-reviewed

    M. Sato, T. Ushio, T. Morimoto, M. Kikuchi, H. Kikuchi, T. Adachi, M. Suzuki, A. Yamazaki, Y. Takahashi, U. Inan, I. Linscott, R. Ishida, Y. Sakamoto, K. Yoshida, Y. Hobara, T. Sano, T. Abe, M. Nakamura, H. Oda, Z. I. Kawasaki

    Journal of Geophysical Research　120　(9)　3822-3851　2015

    DOI： 10.1002/2014JD022428 　

    ISSN： 0148-0227

    eISSN： 2156-2202

  52. Verification of RISING-2 Attitude Control System in Generic Hardware-in-the-Loop Simulation Environment

    Nobuo Sugimura, Yoshihiro Tomioka, Toshinori Kuwahara, Yuji Sakamoto, Kazufumi Fukuda, Kazuya Yoshida

    Verification of RISING-2 Attitude Control System in Generic Hardware-in-the-Loop Simulation Environment　2014/10

  53. Orbit Determination Network System for Micro and Nano Satellites Using Low-Cost Ground Stations Peer-reviewed

    Yuji Sakamoto

    Transactions of the Japan Society for Aeronautical and Space Sciences, Aerospace Technology Japan, Vol.12(2014) No.ists29, Aug. 27, 2014, p.Pf_21-Pf_26　2014/08/27

    DOI： 10.2322/tastj.12.Pf_21 　

  54. Low-Cost Development and Operation of Tohoku University Scientific Microsatellites

    Yuji Sakamoto, Toshinori Kuwahara, Kazuya Yoshida

    11th Annual Meeting, Asia Oceania Geosciences Society (AOGS 2014), Sapporo, Jul. 2014.　2014/07

  55. Establishment of the Ground Testing Environment for Verification and Integration of Micro-satellite Peer-reviewed

    Yoshihiro Tomioka, Kazufumi Fukuda, Nobuo Sugimura, Yuji Sakamoto, Toshinori Kuwahara, Kazuya Yoshida

    Transactions of the Japan Society for Aeronautical and Space Sciences, Aerospace Technology Japan, Vol.12(2014) No.ists29, Jun. 12, 2014, p.Tf_33-Tf_38　2014/06/12

    DOI： 10.2322/tastj.12.Tf_33 　

  56. Development and Operation Results of Cubesat RAIKO Using Ground Station Network System

    Yuji Sakamoto, Masanori Nishio, Tomoyuki Nakajo, Ryo Ishimaru

    AIAA SpaceOps 2014 Conference, Pasadena, CA, May 2014.　2014/05

  57. Operation Results of Cubesat RAIKO Released from International Space Station Peer-reviewed

    Yuji Sakamoto, Yuta Tanabe, Hitoshi Yagisawa, Nobuo Sugimura, Kazuya Yoshida, Masanori Nishio, Tomoyuki Nakajo, Hiroaki Akiyama

    Transactions of the Japan Society for Aeronautical and Space Sciences, Aerospace Technology Japan, Vol.12(2014) No.ists29, Apr. 4, 2014, p.Tf_7-Tf_12　12　(29)　Tf_7-Tf_12　2014/04/04

    Publisher: THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES

    DOI： 10.2322/tastj.12.Tf_7 　

    ISSN： 1884-0485

    More details Close

    The 2-unit size cubesat RAIKO is a nanosatellite developed by Tohoku University and Wakayama University. This paper shows the mission and system specifications. The satellite was released to space on October 4, 2012 from International Space Station, which was the 419-km alt. circular orbit. The techniques for 50-kg microsatellites by Tohoku University are transferred to this satellite, so a lot of functions are included although the power and mass budgets are strongly restricted. The primary missions are the photo storage by different 3 optical sensors, the de-orbit mechanism experiment by expandable thin films, and Ku-band downlink communication experiment. The satellite operation was finished by orbital decay on August 6, 2013. The telemetry data were successful received in total 123 passes, in which total 63 photo images were obtained and maximum 100 kbps (200 ksps) downlink was successful. Using color CMOS camera, gradually separating ISS could be confirmed. From analysis of house-keeping data, the solar generation power in sunshine was 3.38 W (no paddles) to 5.77 W (with paddles) in average, the temperature of onboard computer was in the range of 20.8 to 28.7 deg C, and the battery temperature was 4.2 deg C in average. The real flight data from the 10-month operation will be precious information for future nanosatellite projects.

  58. Development of the Stratospheric Telescope for Observations of Planets-FUJIN-1-and Evaluation of the Pointing Control System

    SHOJI YASUHIRO, TAGUCHI MAKOTO, NAKANO TOSHIHIKO, MAEDA ATSUNORI, TAKAHASHI YUKIHIRO, IMAI MASATAKA, NAKAMOTO JUMPEI, WATANABE MAKOTO, GODA YUYA, KAWAHARA TAKESHI, YOSHIDA KAZUYA, SAKAMOTO YUJI

    宇宙航空研究開発機構研究開発報告　13　(11)　87-15　2014/03

    ISSN： 1349-1113

  59. Global lightning and sprite measurements from international space station Peer-reviewed

    Tomoo Ushio, Mitsuteru Sato, Takeshi Morimoto, Makoto Suzuki, Atsushi Yamazaki, Yasuhide Hobara, Masayuki Kikuchi, Umran Inan, Ivan Linscott, Hiroshi Kikuchi, Ryohei Ishida, Yukihiro Takahashi, Toru Adachi, Yuji Sakamoto, Zen Ichiro Kawasaki

    International Conference on Atmospheric Electricity, ICAE 2014　2014

  60. CubeSat mission for UV-Visible observations of meteors from space: S-CUBE (S3: Shootingstar Sensing Satellite)

    R Ishimaru, Y. Sakamoto, M. Kobayashi, S. Fujita, T. Gonai, H. Senshu, K. Wada, M, Yamada, K. Kurosawa, S. Hosokawa, K. Yoshida, M. Sato, Y. Takahashi, T. Matsui

    LPS XXXXV, Abstract　1846　2014

  61. Attitude Control for Earth Observation Microsatellite RISING-2 Peer-reviewed

    Nobuo Sugimura, Kazufumi Fukuda, Masato Fukuyama, Yoshihiro Tomioka, Toshinori Kuwahara, Yuji Sakamoto, Kazuya Yoshida, Yukihiro Takahashi

    Small Satellite Missions for Earth Observation: Missions & Technologies, Operational Responsive Space, Commercial Constellations, p.262-269, 2014　2014

  62. Development and Operation of Tohoku University Micro Satellite Series for Earth Observation Science

    Yuji Sakamoto, Toshinori Kuwahara, Kazuya Yoshida

    Asian Conference on Remote Sensing (ACRS 2013), Bali, Oct. 2013.　2013/10

  63. Model-Based Environment for Verification and Integration of Micro-Satellites Peer-reviewed

    Toshinori Kuwahara, Yoshihiro Tomioka, Kazufumi Fukuda, Nobuo Sugimura, Yuji Sakamoto, Kazuya Yoshida

    19th IFAC Symposium on Automatic Control in Aerospac　2013/09/03

  64. Generic Thermal Design Strategy for 50kg-class Micro-Satellites

    Yoshihiro Tomioka, Toshinori Kuwahara, Yuji Sakamoto, Kazufumi Fukuda, Nobuo Sugimura, Kazuya Yoshida

    64th International Astronautical Congress, Beijing, Sep. 2013.　2013/09

  65. Dynamic Closed Loop Attitude Control Simulation and Verification Environment for Micro-Satellites

    Kazufumi Fukuda, Toshinori Kuwahara, Yoshihiro Tomioka, Yuji Sakamoto, Kazuya Yoshida

    64th International Astronautical Congress, Beijing, Sep. 2013.　2013/09

  66. A Series of De-Orbit Mechanism for Active Prevention and Reduction of Space Debris

    Toshinori Kuwahara, Kazuya Yoshida, Yuji Sakamoto, Yoshihiro Tomioka, Kazufumi Fukuda, Nobuo Sugimura

    64th International Astronautical Congress, Beijing, Sep. 2013.　2013/09

  67. Model-Based Simulation and Verification Environment for Space Plug-and-Play Avionics

    Toshinori Kuwahara, Kazuya Yoshida, Yuji Sakamoto, Yoshihiro Tomioka, Kazufumi Fukuda, Nobuo Sugimura

    64th International Astronautical Congress, Beijing, Sep. 2013.　2013/09

  68. Constellation of Earth Observation Micro-satellites with Multi-spectral High-resolution Telescopes

    Toshinori Kuwahara, Kazuya Yoshida, Yuji Sakamoto, Yoshihiro Tomioka, Kazufumi Fukuda, Nobuo Sugimura, Junichi Kurihara, Tetsuya Fukuhara, Yukihiro Takahashi

    The 27th Small Satellite Conference, Utah, Aug. 2013.　2013/08

  69. Attitude Control System of International Scientific Micro-satellite RISESAT

    Toshinori KUWAHARA, Kazufumi FUKUDA, Yoshihiro TOMIOKA, Masato FUKUYAMA, Yuji SAKAMOTO, Kazuya YOSHIDA

    The 29th International Symposium on Space Technology and Science, Nagoya, Jun. 2013.　2013/06

  70. A Coordination Method of Gondola Attitude Control and Telescope Pointing Control on a Balloon-Borne Telescope

    Toshihiko Nakano, Yasuhiro Shoji, Yuji Sakamoto, Toshinori Kuwahara, Makoto Watanabe, Yukihiro Takahashi, Makato Taguchi, Kazuya Yoshida

    The 29th International Symposium on Space Technology and Science, Nagoya, Jun. 2013.　2013/06

  71. Space Plug and Play Compatible Earth Observation Payload Instruments

    Toshinori Kuwahara, Yoshihiro Tomioka, Kazufumi Fukuda, Yuji Sakamoto, Kazuya Yoshida

    The 9th IAA Symposium on Small Satellites for Earth Observation, Berlin, Apr. 2013.　2013/04

  72. Attitude Control for Earth Observation Microsatellite RISING-2

    Nobuo Sugimura, Kazufumi Fukuda, Masato Fukuyama, Yoshihiro Tomioka, Toshinori Kuwahara, Yuji Sakamoto, Kazuya Yoshida, Yukihiro Takahashi

    The 9th IAA Symposium on Small Satellites for Earth Observation, Berlin, Apr. 2013.　2013/04

  73. Performance evaluation for pointing control system of the balloon-borne telescope

    T. Nakano, R. Fujimura, Y. Sakamoto, K. Yoshida, T. Kuwahara, Y. Shoji, M. Taguchi, M. Yamamoto, Y. Takahashi

    Advances in the Astronautical Sciences　146　381-391　2013

    ISSN： 0065-3438

  74. Impacts of space plug-and-play technology on micro- and nano-satellites Peer-reviewed

    T. Kuwahara, Y. Tomioka, K. Fukuda, Y. Sakamoto, K. Yoshida, J. Baeckstroem, F. Bruhn

    IFAC Proceedings Volumes (IFAC-PapersOnline)　19　289-294　2013/01

    ISSN： 1474-6670

  75. PERFORMANCE EVALUATION FOR POINTING CONTROL SYSTEM OF THE BALLOON-BORNE TELESCOPE

    T. Nakano, R. Fujimura, Y. Sakamoto, K. Yoshida, T. Kuwahara, Y. Shoji, M. Taguchi, M. Yamamoto, Y. Takahashi

    SPACE FOR OUR FUTURE　146　381-391　2013

    ISSN： 1081-6003

  76. The pointing control method of balloon-borne telescope compensating the motion of flexible base Peer-reviewed

    Toshihiko Nakano, Yasuhiro Shoji, Mutsumi Yamamoto, Ko Hamamoto, Jumpei Nakamoto, Masataka Imai, Yuji Sakamoto, Toshinori Kuwahara, Makoto Watanabe, Yukihiro Takahashi, Kazuya Yoshida, Makoto Taguchi

    2012 IEEE/SICE International Symposium on System Integration (SII)　313-318　2012/12/16

    Publisher: IEEE

    DOI： 10.1109/SII.2012.6427318 　

  77. International Orbit Determination Network System for Micro and Nano Satellites

    Yuji Sakamoto

    UN/Japan Nano-Satellite Symposium　2012/10

  78. Qualification Results of a Sail Deployment Mechanism for Active Prevention and Reduction of Space Debries

    Toshinori Kuwahara, Kazuya Yoshida, Yuji Sakamoto, Yoshihiro Tomioka, Kazufumi Fukuda, Masato Fukuyama, Yuta Tanabe, Yoshihiko Shibuya

    63rd International Astronautical Congress, Naples, Italy, Oct. 2012, IAC-12.A6.4.5.　2012/10

  79. Space Plug and Play Avionics for Small Satellites

    Toshinori Kuwahara, Kazuya Yoshida, Yuji Sakamoto, Yoshihiro Tomioka, Kazufumi Fukuda, Yoshihiko Shibuya

    63rd International Astronautical Congress, Naples, Italy, Oct. 2012, IAC-12.B4.7A.5.　2012/10

  80. Establish the Environment to Support Cost-Effective and Rapid Development of Micro-Satellites

    Yoshihiro Tomioka, Kazuya Yoshida, Yuji Sakamoto, Toshinori Kuwahara, Kazufumi Fukuda, Nobuo Sugimura, Masato Fukuyama, Yoshihiko Shibuya

    63rd International Astronautical Congress, Naples, Italy, Oct. 2012, IAC-12-D1.6.4.　2012/10

  81. System Description and Result of Ground Test for Cubesat RAIKO

    Hitoshi Yagisawa, Yuji Sakamoto, Yuta Tanabe, Nobuo Sugimura, Toshinori Kuwahara, Kazuya Yoshida

    UN/Japan Nano-Satellite Symposium, Nagoya, Oct. 2012.　2012/10

  82. Evaluation of Power Control System for Micro and Nano Satellites by Hardware-in-the-Loop Simulator,

    Yuji Sakamoto, Toshinori Kuwahara, Yoshihiro Tomioka, Kazufumi Fukuda, Kazuya Yoshida

    Small Satellite Conference, Utah, August, 2012.　2012/08

  83. International Scientific Micro-satellite RISESAT based on Space Plug and Play Avionics

    Toshinori Kuwahara, Kazuya Yoshida, Yuji Sakamoto, Yoshihiro Tomioka, Kazufumi Fukuda, Masahiro Fukuyama, Yoshihiko Shibuya

    Small Satellite Conference, Utah, August, 2012, SSC12-I-1.　2012/08

  84. A Balloon-borne Telescope for Planetary Observations Peer-reviewed

    Yasuhiro Shoji, Yukihiro Takahashi, Makoto Taguchi, Kazuya Yoshida, Yuji Sakamoto, Makoto Watanabe, Toshihiko Nakano, Ryosuke Fujimura, Mutsumi Yamamoto

    39th COSPAR Scientific Assembly　39　1794　2012/07/14

  85. Orbit Determination System with Reasonable Performance Using Low-Cost Ground Station for Nanosatellite Projects Peer-reviewed

    Yuji Sakamoto, Akari Yoneyama

    Transactions of the Japan Society for Aeronautical and Space Sciences, Aerospace Technology Japan, Vol.10(2012) No.ists28, p.Pf_9-Pf_14　10　(28)　Pf_9-Pf_14　2012/06/11

    Publisher: THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES

    DOI： 10.2322/tastj.10.Pf_9 　

    ISSN： 1884-0485

    More details Close

    Recently the activities for the development of micro- and nano- satellites like a cubesat are being increased. A lot of satellites are operated at a ground station located in a university, but public orbit information is used. In this paper, the orbit determination system is constructed using observations of Doppler frequency at a low-cost ground station. The traditional batch state estimation filter is used, and the orbital elements of satellite position and velocity in inertia coordinates are determined from the Doppler frequency of receiving signals. The verification tests are conducted using UHF-band signals (about 430 MHz) received at an amateur radio station and S-band signals (about 2.2 GHz) received at a 2.4-m parabola antenna from real satellites, and the valid performance is conformed for tracking satellites not depending on public orbit information. The error is max. 0.3 degrees in direction and max. 3.9 km in position for UHF-band signals, and max. 1.1 degrees in direction and max. 37 km in position for S-band signals. This method is valid especially for low-earth-orbit satellites with large Doppler effect.

  86. 超小型地球観測衛星「RISING-2」の開発報告 - 多波長望遠鏡による積乱雲及びスプライト現象の観測 - Peer-reviewed

    冨岡義弘, 坂本祐二

    The Institute of Electronics, Information and Communication Engineers (IEICE), The Committee on Space, Aeronautical and Navigational Electronics Technical Report　112　(107)　83-88　2012/06

    Publisher: The Institute of Electronics, Information and Communication Engineers

    ISSN： 0913-5685

    More details Close

    The development of 50kg-class micro-satellite RISING-2 was started in 2009 by Tohoku University. At the time of Jun, 2012, the development of flight model of hardware was completed, and the adjustment of software and others is continued aimed its launch in 2013. The satellite has a telescope with 10cm diameter and lm focal length, and it takes images with 5m resolution. It can observe multi-spectrum images using liquid crystal tunable filter as well as RGB color photos. The primary mission is the observation of cumulonimbus clouds in visible near infrared. Also, transient luminous events in upper atmosphere such as sprite are observed using CMOS sensors. This paper shows the latest specifications of FM, and the result of test was carried out so far and task-schedule of future.

  87. Pre-Flight Analysis, Test Evaluation and Flight Verification of the Thermal System of Tohoku University SPRITE-SAT Peer-reviewed

    Yuji Sakamoto, Yasuhiro Nakazato, Tomoki Sawakami, Kazuya Yoshida, Yukihiro Takahashi

    Transactions of Japan Society for Aeronautical and Space Sciences, Aerospace Technology Japan, Vol.8 (2010) No.ists27, p.Tf_1-Tf_6.　8　(27)　Tf_1-Tf_6　2012/02/18

    Publisher: THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES

    DOI： 10.2322/tastj.8.Tf_1 　

    ISSN： 1884-0485

    More details Close

    The microsatellite SPRITE-SAT developed by Tohoku University was launched in January 2009. Regarding the thermal system of SPRITE-SAT, the mathematical model, the parameter determination for the heat transfer coefficients, and the comparison between the estimate and real temperature in flight mode are shown in this paper. The precision of thermal analysis using the simple 7-node model was solved. The estimate error of temperature in orbit is less than 5 degrees Celsius in panels with most of instruments.

  88. Micro-Satellites for International Scientific Missions

    YOSHIDA Kazuya, SAKAMOTO Yuji, KUWAHARA Toshinori, TAKAHASHI Yukihiro

    Journal of The Society of Instrument and Control Engineers　51　(5)　438-444　2012

    Publisher: The Society of Instrument and Control Engineers

    DOI： 10.11499/sicejl.51.438 　

    ISSN： 0453-4662

  89. Development and Verification Environment for the Attitude Determination and Control System of the Micro-satellite RISESAT Peer-reviewed

    Toshinoi Kuwahara, Yuji Sakamoto, Kazuya Yoshida, Yoshihiro Tomioka, Kazushi Fukuda, Nobuo Sugimura, Masato Fukuyama, Yoshihiko Shibuya

    第20回スペース・エンジニアリング・コンファレンス【SEC’11】　10　(28)　Td_11-Td_16　2012/01

    Publisher: THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES

    DOI： 10.2322/tastj.10.Td_11 　

    ISSN： 1884-0485

    More details Close

    The 50-kg class micro satellite RISING-2 is now under development by Tohoku University and Hokkaido University. The development is at Flight Model phase and some components are tested to evaluate its specifications. In this paper, the endurance tests using vacuum chamber and thermal test chamber in Tohoku University are described. There was no problem in those tests. In addition, the attitude control accuracy of the RISING-2 was analyzed in the simulation. This simulation based on component specifications and also included noise data. The results show the pointing error angle was less than required error angle.

  90. Radiation Effect Mitigation Methods for Electronic Systems Peer-reviewed

    Toshinori Kuwahara, Yoshihiro Tomioka, Kazufumi Fukuda, Nobuo Sugimura, Yuji Sakamoto

    2012 IEEE/SICE INTERNATIONAL SYMPOSIUM ON SYSTEM INTEGRATION (SII)　307-312　2012

    DOI： 10.1109/SII.2012.6427324 　

  91. Satellite-to-Ground Optical Communication System on Low Earth Orbit Micro-satellite RISESAT Peer-reviewed

    Toshinori Kuwahara, Kazuya Yoshida, Yuji Sakamoto, Yoshihiro Tomioka, Kazufumi Fukuda, Masato Fukuyama, Nobuo Sugimura, Hiroo Kunimori, Hideki Takenaka, Morio Toyoshima, Tetsuharu Fuse, Toshihiro Kubooka

    2012 IEEE/SICE INTERNATIONAL SYMPOSIUM ON SYSTEM INTEGRATION (SII)　939-944　2012

    DOI： 10.1109/SII.2012.6427336 　

  92. Lessons Learned on Structural Design of 50kg Micro-satellites based on Three Real-life Micro-satellite Projects Peer-reviewed

    Yoshihiro Tomioka, Kazuya Yoshida, Yuji Sakamoto, Toshinori Kuwahara, Kazufumi Fukuda, Nobuo Sugimura

    2012 IEEE/SICE INTERNATIONAL SYMPOSIUM ON SYSTEM INTEGRATION (SII)　319-324　2012

    DOI： 10.1109/SII.2012.6427314 　

  93. Ground Test of Attitude Control System for Micro Satellite RISING-2 Peer-reviewed

    Nobuo Sugimura, Kazufumi Fukuda, Yoshihiro Tomioka, Masato Fukuyama, Yuji Sakamoto, Toshinori Kuwahara, Tetuya Fukuhara, Kazuya Yoshida, Yukihiro Takahashi

    2012 IEEE/SICE INTERNATIONAL SYMPOSIUM ON SYSTEM INTEGRATION (SII)　301-306　2012

    DOI： 10.1109/SII.2012.6427322 　

  94. Satellite system Integration based on Space Plug and Play Avionics Peer-reviewed

    Yoshida Kazuya, Yuji Sakamoto

    2011 IEEE/SISE International Symposium on Space Integration　2011/12/20

    DOI： 10.1109/SII.2011.6147568 　

  95. Development Method of Command and Data Handling System for Micro and Nano Satellites

    Yuji Sakamoto, Toshinori Kuwahara, Steve Battazzo, Kazufumi Fukuda, Yoshihiro Tomioka, Kazuya Yoshida

    The 3rd Nano-Satellite Symposium, Kitakyushu, Japan, Dec. 12-13, 2011　2011/12

  96. Micro-satellite structure system for cost-effective and rapid development,

    Yoshihiro Tomioka, Toshinori Kuwahara, Yuji Sakamoto, Hironori Fukuchi, Yuta Tanabe, Kazuya Yoshida

    The 3rd Nano-Satellite Symposium, Kitakyushu, Japan, Dec. 12-13, 2011.　2011/12

  97. Development Status of Micro-satellite De-orbit Mechanisms for Active Prevention and Reduction of Space Debris,

    Toshinori Kuwahara, Yoshihiro Tomioka, Yuta Tanabe, Masato Fukuyama, Yuji Sakamoto, Kazuya Yoshida

    The 3rd Nano-Satellite Symposium, Kitakyushu, Japan, Dec. 12-13, 2011.　2011/12

  98. ほどよし2号機の開発状況 Peer-reviewed

    坂本祐二, 吉田和哉

    第55回宇宙科学技術連合講演会　2011/11/30

  99. 次世代型超小型衛星の低コスト短期開発手法及びその支援環境の構築 Peer-reviewed

    冨岡義弘, 坂本祐二, 吉田和哉

    第55回宇宙科学技術連合講演会　2011/11/30

  100. 50kg級超小型衛星の効率的な熱設計および評価手法 Peer-reviewed

    坂本祐二, 吉田和哉

    第55回宇宙科学技術連合講演会　2011/11/30

  101. A Sail Deployment Mechanism for Active Prevention and Reduction of Space Debris

    Toshinori Kuwahara, Kazuya Yoshida, Yuji Sakamoto, Yoshihiro Tomioka, Kazufumi Fukuda, Yuta Tanabe, Masato Fukuyama

    62nd International Astronautical Congres, Cape Town, Oct. 2011, IAC-11.A6.4.7.　11　(6)　1-7　2011/10

  102. Orbit Determination using Radio Interferometer of Small-Diameter Antennas for LEO Satellites Peer-reviewed

    Yuji Sakamoto, Masanori Nishio

    IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS　47　(3)　2111-2118　2011/07

    DOI： 10.1109/TAES.2011.5937286 　

    ISSN： 0018-9251

  103. Development Status and Operation Plan of 50-kg Microsatellite RISING-2 for Earth Observations by Multi-Spectrum Instruments

    Yuji Sakamoto, Toshinori Kuwahara, Yoshihiro Tomioka, Kazufumi Fukuda, Steve Battazzo, Kazuya Yoshida, Tetsuya Fukuhara, Junichi Kurihara, Yukihiro Takahashi

    The 28th International Symposium on Space Technology and Science (ISTS), Naha, Japan, June 2011, No.2011-f-25.　2011/06

  104. The Evaluation Tests of the Attitude Control System of the 50-kg Micro Satellite RISING-2

    Kazufumi Fukuda, Nobuo Sugimura, Yuji Sakamoto, Toshinori Kuwahara, Kazuya Yoshida, Yukihiro Takahashi

    The 28th International Symposium on Space Technology and Science (ISTS), Naha, Japan, June 2011, No.2011-d-01.　10　(28)　Td_11-Td_16　2011/06

    Publisher: THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES

    DOI： 10.2322/tastj.10.Td_11 　

    ISSN： 1884-0485

    More details Close

    The 50-kg class micro satellite RISING-2 is now under development by Tohoku University and Hokkaido University. The development is at Flight Model phase and some components are tested to evaluate its specifications. In this paper, the endurance tests using vacuum chamber and thermal test chamber in Tohoku University are described. There was no problem in those tests. In addition, the attitude control accuracy of the RISING-2 was analyzed in the simulation. This simulation based on component specifications and also included noise data. The results show the pointing error angle was less than required error angle.

  105. System Integration of a Star Sensor for the Small Earth Observation Satellite RISING-2

    Toshinori Kuwahara, Steve Battazzo, Yoshihiro Tomioka, Yuji Sakamoto, Kazuya Yoshida

    The 28th International Symposium on Space Technology and Science (ISTS), Naha, Japan, June 2011, No.2011-d-11.　10　(28)　Td_1-Td_6　2011/06

    Publisher: THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES

    DOI： 10.2322/tastj.10.Td_1 　

    ISSN： 1884-0485

    More details Close

    Tohoku University is now finishing the development of its second 50-kg class Earth observation microsatellite RISING-2. RISING-2 is equipped with four camera systems with eight different imaging sensors, including a 5-m ground resolution cassegrain mirror telescope with three fixed wavelength filters in red, green, and blue, as well as a liquid crystal tunable filter. RISING-2 aims to achieve agile high resolution multi-spectral Earth observations. For this mission, Tohoku University has been developing a precise and agile attitude control system including multiple sensors and actuators. The pointing error is required to be less than 0.1 deg and the pointing knowledge shall be better than 0.06 deg. The designed star sensor is based on CCD image sensor which has a flight heritage by the university's first satellite RISING. This system utilizes a pyramid algorithm for secure constellation identification and works with a maximum update frequency of 2 Hz. Its availability is also very high in terms of the satellite's operating angular velocity. In this paper, the system integration of the star sensor as well as the results of its ground based performance evaluation is described in detail.

  106. Development Status and Performance Verification of Balloon-Borne Telescope for Optical Observation of Planets

    Toshihiko Nakano, Yuji Sakamoto, Kazuya Yohida, Toshinori Kuwahara, Steve Battazzo, Ryosuke Fujimura, Yasuhiro Shoji, Makoto Taguchi, Mutumi Yamamoto, Yukihiro Takahashi

    The 28th International Symposium on Space Technology and Science (ISTS), Naha, Japan, June 2011, No.2011-k-27.　2011/06

  107. A Series of 50kg-Class Micro-Satellites for Advanced Science Missions

    Kazuya Yoshida, Yuji Sakamoto, Toshinori Kuwahara

    The 8th IAA Symposium on Small Satellites for Earth Observation, Berlin, Germany, Apr. 2011, No.IAA-B8-0317P.　2011/04

  108. Mission and System of the Earth Observation Microsatellite RISING-2

    Toshinori Kuwahara, Yuji Sakamoto, Kazuya Yoshida, Yukihiro Takahashi, Tetsuya Fukuhara, Junichi Kurihara

    The 8th IAA Symposium on Small Satellites for Earth Observation, Berlin, Germany, Apr. 2011, No.IAA-B8-1404.　2011/04

  109. International Scientific Missions on a Japan-led Micro-satellite Peer-reviewed

    Toshinori Kuwahara, Kazuya Yoshida, Yuji Sakamoto, Yukihiro Takahashi, Junichi Kurihara, Hiroshi Yamakawa, Atsushi Takada

    2nd Nano-Satellite Symposium　2011/03

  110. Static closed loop test system for attitude control system of micro satellite RISING-2

    Kazufumi Fukuda, Yuji Sakamoto, Toshinori Kuwahara, Kazuya Yoshida, Yukihiro Takahashi

    2011 IEEE/SICE International Symposium on System Integration, SII 2011　890-895　2011

    DOI： 10.1109/SII.2011.6147567 　

  111. A Japanese microsatellite bus system for international scientific missions

    Toshinori Kuwahara, Kazuya Yoshida, Yuji Sakamoto, Yukihiro Takahashi, Junichi Kurihara, Hiroshi Yamakawa, Atsushi Takada

    62nd International Astronautical Congress 2011, IAC 2011　5　3699-3706　2011

  112. Development of the Microsatellite RISING-2 by Tohoku University and Hokkaido University

    Yuji Sakamoto, Yukihiro Takahashi, Kazuya Yoshida, Kazufumi Fukuda, Toshihiko Nakano, Steve Battazzo, Tetsuya Fukuhara, Junichi Kurihara

    61th International Astronautical Congress, 27 September - 1 October, 2010, Prague, Czech, Paper No. IAC-10-B4.2.12.　2010　371-372　2010/10

    Publisher: The Japan Society of Mechanical Engineers

    DOI： 10.1299/jsmemecjo.2010.5.0_371 　

    More details Close

    Tohoku University and Hokkaido University started the development of a new 50-kg microsatellite RISING-2 at July 2009. This satellite inherits the development technique of RISING (SPRITE-SAT) launched on January 2009. The progress is shown in this paper. Using a Cassegrain telescope with 10-cm diameter and 1-m focal length, earth surface is observed with 5-m resolution from 700-km-alt sun synchronous orbit. By 3-axis attitude stabilization using reaction wheels and star sensors, the designated area on earth surface can be observed. In addition to color images, multi-spectrum images of cumulonimbus are observed by using a liquid crystal tunable filter. As a secondary mission, transient luminous events such as sprite are observed, which is same mission as SPRITE-SAT.

  113. Development of the microsatellite rising-2 by Tohoku University and Hokkaido University

    Yuji Sakamoto, Yukihiro Takahashi, Kazuya Yoshida, Kazufumi Fukuda, Toshihiko Nakano, Steve Battazzo, Tetsuya Fukuhara, Junichi Kurihara

    61st International Astronautical Congress 2010, IAC 2010　1　469-473　2010

  114. Highly Precise Pointing Control System on a Balloon-Borne Telescope for Optical Observations of Planets Peer-reviewed

    Yasuhiro Shoji, Tomoya Onishi, Steve Battazzo, Tomoko Teraguchi, Atsushi Yoshimura, Yuji Sakamoto, Yukihiro Takahashi, Kazuya Yoshida, Makoto Taguchi

    Transactions of the Japan Society for Aeronautical and space sciences, Aerospace Technology Japan, Vol.8(2010), No.ists27, pp.Pm_15-Pm_20.　8　(27)　Pm_15-Pm_20　2010

    Publisher: THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES

    DOI： 10.2322/tastj.8.Pm_15 　

    ISSN： 1884-0485

    More details Close

    A balloon borne telescope is one of the space observation methods by carrying a telescope to the stratosphere with a huge balloon in order to be free from the atmospheric influences on observations. The authors have been developing a balloon borne telescope system for optical observations of other planets in the solar system. The observation aimed to achieve finer images of the planets than those taken by ground telescopes, which required the balloon borne telescope to hold the target star with subarcsec precision during the exposure of the camera. To meet the requirement, the system is equipped three stage pointing system. This article introduces the overview of the flight campaign and the flight system, and reports the pointing performance verified in ground experiments.

  115. SPRITE-SAT: a Micro Satellite for Scientific Observation of Transient Luminous Events and Terrestrial Gamma-Ray Flashes Peer-reviewed

    Kazuya YOSHIDA, Yukihiro TAKAHASHI, Yuji SAKAMOTO, Eriko UJIIE, Kei TAKIUCHI, Yasuhiro NAKAZATO, Tomoki SAWAKAMI, Takeshi SAKANOI, Yasumasa KASABA, Satoshi KONDO, Kozo YAMASHITA, Shinya UEDA, Takeshi TAKASHIMA, Kazuhiro NAKAZAWA, Takefumi MITANI, Teruaki ENOTO, Mitsuteru SATO, Umran INAN, Ivan LINSCOTT, Fredrik BRUHN, Yoshinari MASUMOTO

    Transactions of the Japan Society for Aeronautical and Space Sciences, Aerospace Technology Japan, Vol.8(2010), No.ists27, pp.Tm_7-Tm_12.　8　(27)　Tm_7-Tm_12　2010

    Publisher: THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES

    DOI： 10.2322/tastj.8.Tm_7 　

    ISSN： 1884-0485

    More details Close

    SPRITE-SAT is a micro satellite in the size of 50 cm cube and weighing 45-kg, designed and developed by Tohoku University. Its mission objective is to conduct scientific observation of atmospheric luminous emissions called "sprites" and terrestrial Gamma-ray flushes. Both are recently discovered phenomena and their mechanisms are still under the veil. SPRITE-SAT was developed to achieve significant observations to determine clear models of these mysterious phenomena. On January 23rd, 2009, SPRITE-SAT was successfully launched by JAXA's H-IIA rocket as a piggyback payload of Greenhouse Gas Observation Satellite (GOSAT). The spacecraft is now in a sun-synchronous polar orbit with 670 km altitude from the Earth's surface. This paper describes a general overview of the spacecraft and its mission.

  116. SPRITE-SAT: A University Small Satellite for Observation of High-Altitude Luminous Events Peer-reviewed

    Yukihiro Takahashi, Kazuya Yoshida, Yuji Sakamoto, Takeshi Sakamoi

    SMALL SATELLITE MISSIONS FOR EARTH OBSERVATION　197-+　2010

    DOI： 10.1007/978-3-642-03501-2_18 　

  117. The balloon-borne telescope system for optical observation of planets Peer-reviewed

    Toshihiko Nakano, Yuji Sakamoto, Kazuya Yoshida, Toshinori Kuwahara, Yasuhiro Shoji, Makoto Taguchi, Mutumi Yamamoto, Yukihiro Takahashi

    2010 IEEE/SICE International Symposium on System Integration: SI International 2010 - The 3rd Symposium on System Integration, SII 2010, Proceedings　236-241　2010

    DOI： 10.1109/SII.2010.5708331 　

  118. Attitude control system of micro satellite RISING-2 Peer-reviewed

    Kazufumi Fukuda, Toshihiko Nakano, Yuji Sakamoto, Toshinori Kuwahara, Kazuya Yoshida, Yukihiro Takahashi

    2010 IEEE/SICE International Symposium on System Integration: SI International 2010 - The 3rd Symposium on System Integration, SII 2010, Proceedings　373-378　2010

    DOI： 10.1109/SII.2010.5708354 　

  119. Improvement in University Satellite Operation Using Ground Station Network Peer-reviewed

    Yasuhisa Oda, Mitsuhito Komatsu, Naomi Kurahara, Yuya Nakamura, Yuji Sakamoto, Shinichi Nakasuka, Anura Wickramanayake, Priya Fernando

    Transactions of Japan Society for Aeronautical and Space Sciences, Space Technology Japan, Vol. 7, ists26, December 2009, Tn_31-Tn_34.　7　(26)　Tu_31-Tu_34　2009/12

    Publisher: THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES

    DOI： 10.2322/tstj.7.Tu_31 　

    ISSN： 1347-3840

    More details Close

    The development of Ground Station Network (GSN) was proposed to achieve advanced operation for nano-satellites by the collaboration of university ground stations. GSN is a network of ground stations of universities and colleges and member stations are controlled remotely via the Internet. The service of the receiving station network was used in cubesat operation. GSN in receiving station service showed improvement of the amount of downlink data. The international network with collaboration of ground stations was carried out. The status data and picture data were acquired during the hand-over operation. As the result of international network operation, the collaborative operation with ground station abroad improves visible time and operation data received per one day. Doppler shift was measured using an amateur radio. The maximum difference of predicted frequency and measured frequency was detected for each pass. The correction method of TLE was tested using the frequency difference. The measurement result with corrected TLE from old TLE showed good agreement to the result with the new TLE.

  120. Dynamic Modeling and Experimental Verification of the Pointing Technology in Balloon-Borne Telescope System for Optical Remote Sensing of Planets Peer-reviewed

    Yuji Sakamoto, Tomoaki Kanazawa, Yasuhiro Shouji, Yukihiro Takahashi, Kazuya Yoshida, Makoto Taguchi

    Transactions of Japan Society for Aeronautical and Space Sciences, Space Technology Japan, Vol. 7, ists26, October 2009, Pd_23-Pd_28.　7　(26)　Pd_23-Pd_28　2009/11

    Publisher: THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES

    DOI： 10.2322/tstj.7.Pd_23 　

    ISSN： 1347-3840

    More details Close

    Tohoku University and Rikkyo University are carrying out the project of Venus observation with high precision using a balloon-borne telescope. In this paper, the outline of Balloon-Borne Telescope for the optical remote sensing of Venus is introduced, and the simulation model of three-stage control method is constructed. For this observation, the pointing technology with high precision to restrain the slight moving of image is necessary. The target precision is only 0.1 arc seconds. The dynamics and control model is defined firstly, and the model parameters are determined by the experimental verification. By developing the numerical simulation tool, the motion can be estimated in the simulator, and the control strategy can be more easily optimized compared to the gain adjustment only based on experiments.

  121. 「東北大学スプライト観測衛星(SPRITE-SAT)の開発および運用報告

    坂本祐二, 吉田和哉, 澤上友貴, 坂野井健, 高橋幸弘

    日本機械学会2009年度年次大会　2009　245-246　2009/09

    Publisher: The Japan Society of Mechanical Engineers

    DOI： 10.1299/jsmemecjo.2009.5.0_245 　

    More details Close

    The microsatellite SPRITE-SAT developed by Tohoku University was launched in January 2009. The mission is the observation of Sprite phenomena and Terrestrial Gamma-ray Flashes incidental on lightning discharges. In the 12 days after launch, the satellite is normally operated. But because it is damaged by a serious trouble at February 4, 2009, the data communication including uplink and downlink is not successful now. This paper shows the outlines of satellite system, flight operation results, and the reason of trouble.

  122. Development of a Multi-Spectrum Imager for the S-520 Sounding Rocket Peer-reviewed

    Yasuhiro Shoji, Takashi Yoshikawa, Yuji Sakamoto, Yukihiro Takahashi, Kazuya Yoshida

    Transactions of Japan Society for Aeronautical and Space Sciences, Space Technology Japan, Vol. 7, ists26, September 2009, Tn_7-Tn_12.　7　(26)　Tn_7-Tn_12　2009/09

    Publisher: THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES

    DOI： 10.2322/tstj.7.Tn_7 　

    ISSN： 1347-3840

    More details Close

    An S-520 sounding rocket was launched in the summer of 2007 in order to observe magneto electric phenomena in high sky and to verify a new spectroscopic observation method. A Multi-Spectrum Imager (MSI) was developed for the latter aim. The observation device is equipped a spectroscopic camera with a liquid crystal tunable filter and a pointing system to control the pointing direction to take spectroscopic images of a target against the spin of the rocket body. With the successful flight of the sounding rocket, the MSI succeeded in taking and sending approximately 30 pictures and the house keeping data.

  123. Development and Flight Data Analysis of the Attitude Determination and Control System of Tohoku University SPRITE-SAT

    Yuji Sakamoto, Tomoki Sawakami, Kazuya Yoshida, Yukihiro Takahashi

    The 27th International Symposium on Space Technology and Science, Tsukuba, Japan, Jul. 2009, 2009-f-13　2009/07

  124. Development of the Structural System for Tohoku University SPRITE-SAT Peer-reviewed

    Tomoki Sawakami, Kei Takiuchi, Eriko Ujiie, Yuji Sakamoto, Kazuya Yoshida, Yukihiro Takahashi

    ISTS 2009-f-11　2009/06

  125. Report of the development and the initial operation of Tohoku University SPRITE-SAT (RISING) for sprites and terrestrial gamma-ray flashes observation

    Yuji Sakamoto, Yukihiro Takahashi, Takeshi Sakanoi, Kazuya Yoshida

    日本地球惑星連合大会　2009/05

  126. 東北大学スプライト観測衛星(SPRITE-SAT)の開発完了および打上報告

    吉田和哉, 坂本祐二, 坂野井健, 高橋幸弘

    日本航空宇宙学会北部支部 2009年講演会　2009/03

  127. 気球搭載望遠鏡による惑星圏観測

    田口真, 吉田和哉, 坂本祐二, 荘司泰弘, 金澤知明, 高橋幸弘, 星野直哉, 佐藤隆雄, 坂野井健, 宇野健

    第9回惑星圏研究会集録　2009

  128. 新型伸展マストを搭載する東北大学SPRITE-SATの姿勢制御系

    坂本祐二, 吉田和哉, 氏家恵理子, 坂野井健, 高橋幸弘

    第52回宇宙科学技術連合講演会　2008/11

  129. 高高度発光現象及び地球ガンマ線観測を目指す超小型科学衛星SPRITE-SATの開発

    氏家恵理子, 吉田和哉, 高橋幸弘, 坂本祐二, 坂野井健, 升本喜就, 笠羽康正, 近藤哲志

    宇宙・航行エレクトロニクス研究会（SANE）　108　(267)　1-6　2008/10

    Publisher: The Institute of Electronics, Information and Communication Engineers

    ISSN： 0913-5685

    More details Close

    Tohoku University is now developing the 50-kg microsatellite named SPRITE-SAT, and this is launched by Japanese H-IIA rocket as a piggy-back satellite in the beginning of 2009. The SPRITE-SAT observes one of transient luminous events (TLEs) in the middle and upper atmosphere, called "sprites", and terrestrial gamma-ray flashes (TGFs). The mission of SPRITE-SAT is to solve the generation mechanism of these events. The satellite has a new-model deployable mast, and the bottom panel loading almost mission instruments is pointing to the earth by the gravity gradient torque. In this paper, missions and the satellite system are explained.

  130. Development of the Attitude Control System for Tohoku University SPRITE-SAT Using a New-Model Deployable Mast

    Yuji Sakamoto, Kazuya Yoshida, Eriko Ujiie, Yukihiro Takahashi, Takeshi Sakanoi, Kei Takiuchi, Tomoki Sawakami, Yasuhiro Nakazato, Satoshi Kondo

    59th International Astronautical Congress, 29 September - 3 October, 2008, Glasgow, Scotland, Paper No. IAC-08-C1.8.14.　2008/10

  131. ARLISS Comeback Competition: Six-year History of Autonomous Rover Challenge Peer-reviewed

    Kazuya Yoshida, Keiji Nagatani, Yuji Sakamoto

    26th International Symposium on Space Technology and Science　2008/06

  132. UNISEC/GSNワーキンググループによる大学衛星のための地上局ネットワークシステムの開発および活動 Invited

    坂本祐二, 小田靖久, 小松満仁, 倉原直美

    信学技報 Vol.107 No.497　107　(496)　55-60　2008/02

  133. 気球搭載望遠鏡による金星観測

    田口 真, 吉田 和哉, 坂本 祐二, 荘司 泰弘, 高橋 幸弘, 坂野井 健

    平成20年度大気球シンポジウム集録　2008

  134. Development of the sprite and lightning imaging system onboard the SPRITE-SAT

    Sato, M, Y. Takahashi, T. Sakanoi, S. Ueda, S. Kondo, K. Yoshida, Y. Sakamoto, T. Takashima

    EOS Trans, AGU　88　(52)　2008

  135. Methods for the orbit determination of tethered satellites in the project QPS Peer-reviewed

    Yuji Sakamoto, Kazuhiko Yotsumoto, Kazunori Sameshima, Masanori Nishio, Tetsuo Yasaka

    ACTA ASTRONAUTICA　62　(2-3)　151-158　2008/01

    DOI： 10.1016/j.actaastro.2006.12.053 　

    ISSN： 0094-5765

  136. 東北大学における宇宙開発プロジェクト～成層圏気球・観測ロケット・小型人工衛星

    坂本祐二, 高橋幸弘, 吉田和哉

    第51回宇宙科学技術連合講演会　2007/10

  137. 東北大学スプライト観測衛星の開発

    坂本祐二, 高橋幸弘, 吉田和哉

    日本地球惑星科学連合2007年大会　2007/05

  138. 小口径電波干渉計による低高度地球周回衛星の軌道決定

    坂本祐二, 西尾正則, 高野忠

    先進的軌道計測・決定技術に関する研究会論文集, JAXA-SP-06-015, pp.77-84, 2007　2007/03

  139. Kyushu University Micro-Satellite QTEX Project Peer-reviewed

    Toshinori Kuwahara, Tetsuo Yasaka, Toshiya Hanada, Hiroshi Hirayama, Yuji Sakamoto, Takamasa Itahashi

    55th International Astronautical Congress　2004/10

  140. Orbit determination using only Doppler frequency of tethered satellites at a single amateur radio station Peer-reviewed

    Y Sakamoto, T Yasaka

    SPACE ACTIVITIES AND COOPERATION CONTRIBUTING TO ALL PACIFIC BASIN COUNTRIES　117　265-279　2004

    ISSN： 1081-6003

  141. Methods for the Orbit Determination of a Tethered Satellite System by a Single Ground Station Peer-reviewed

    Yuji Sakamoto, Tetsuo Yasaka

    Memoirs of the Faculty of Engineering Kyushu University, Vol. 63, No. 3, September 2003, pp. 185-202.　2003/09

  142. Development of Low-Cost Micro Tethered Satellite System Peer-reviewed

    Yuji Sakamoto, Hiroshi Yano, Akiko Nishimine, Motoki Miyazaki, Krishna D. Kumar, Hiroshi Hirayama, Tetsuo Yasaka

    Proceedings of the 23rd International Symposium on Space Technology and Science (23rd ISTS), Matsue, Japan, May 26 - June 2, 2002.　2002/06

  143. Study of low-cost orbit determination system for tethered satellites Peer-reviewed

    Y Sakamoto, T Yasaka

    SPACE DEVELOPMENT AND COOPERATION AMONG ALL PACIFIC BASIN COUNTRIES　110　79-97　2002

    DOI： 10.11230/jsts.16.1_27 　

    ISSN： 1081-6003

  144. Study of low-cost orbit determination system for tethered satellites Peer-reviewed

    Y Sakamoto, T Yasaka

    SPACE DEVELOPMENT AND COOPERATION AMONG ALL PACIFIC BASIN COUNTRIES　110　79-97　2002

    ISSN： 1081-6003

  145. Construction of Orbit Determination System Using Low-Cost Ground Station Peer-reviewed

    Yuji Sakamoto, Tetsuo Yasaka

    Proceedings of the 22nd International Symposium on Space Technology and Science (22nd ISTS), Morioka, Japan, May 28 - June 4, 2000.　2000　2000/06

  146. Study on a Tether Deployment System (TDS) of a Micro Tethered Satellite Peer-reviewed

    Yosuke Nakamura, Yuji Sakamoto, Tetsuo Yasaka

    Proceedings of the 22nd International Symposium on Space Technology and Science (22nd ISTS), Morioka, Japan, May 28 - June 4, 2000.　2000/06

  147. The Kyushu/US Experimental Satellite Tether (QUEST) Mission, a Small Satellite to Test and Validate Spacecraft Tether Deployment and Operations Peer-reviewed

    Nozomu Takaki, Hans Carlson, Yosuke Nakamura, Yasutaka Obayashi, Yuji Sakamoto, Kohei Shigematsu, Hiroshi Hirayama, Lauren Egan,Michael Mottola, James Wolfe, Helen Reed,Christopher Adam Kitts, Tetsuo Yasaka

    Proceedings of the 22nd International Symposium on Space Technology and Science (22nd ISTS), Morioka, Japan, May 28 - June 4, 2000.　2000/06

Show all ︎Show first 5

Misc. 85

  1. Demonstration of Ranging, Propulsion, and Deployment System for Deep Space Exploration in Low Earth Orbit using HOKUSHIN-1 Technology Demonstration CubeSat

    藤田伸哉, 桑原聡文, 吉田和哉, 坂本祐二, 川口淳一郎, 内海政春

    宇宙科学技術連合講演会講演集(CD-ROM)　66th　2022

    ISSN： 1884-1945

  2. Preliminary design and case study of Satellite Operation Management System for constellations and ground station network

    坂本祐二, 藤田伸哉, 白石尚也, 桑原聡文, 栗原純一

    日本地球惑星科学連合大会予稿集(Web)　2021　2021

  3. Tools and Methods of Satellite Operation Management System for Constellation of Micro Satellites and Ground Stations

    坂本祐二, 栗原純一, 佐藤悠司, 藤田伸哉, 桑原聡文

    宇宙科学技術連合講演会講演集(CD-ROM)　65th　2021

    ISSN： 1884-1945

  4. Ground demonstrations of the High-performance Star Tracker for microsatellites

    中村倫敦, 谷津陽一, 渡邉奎, 松永三郎, 河合誠之, 佐藤悠司, 藤田伸哉, 桑原聡文, 栗原純一, 坂本祐二, 白籏麻衣, 江野口章人, 武山芸英, 上村文彦, 正木哲, 稲葉和男, 丸茂孝一, 吉田政和, 蓮見俊吾, 福田達也

    宇宙科学技術連合講演会講演集(CD-ROM)　65th　2021

    ISSN： 1884-1945

  5. Double Fail-Safe Attitude Control System for Artificial Meteor Microsatellite ALE-1

    FUJITA Shinya, SATO Yuji, KUWAHARA Toshinori, SAKAMOTO Yuji, SHIBUYA Yoshihiko, KAMACHI Koh

    Transactions of the Japan Society for Aeronautical and Space Sciences, Aerospace Technology Japan (Web)　19　(1)　2021

    ISSN： 1884-0485

  6. On-Board Computers for Micro-Satellites

    KUWAHARA Toshinori, FUJITA Shinya, SATO Yuji, SIBUYA Yoshihiko, PALA Alperen, TOMIO Hannah, MURATA Yu, SAKAMOTO Yuji

    Transactions of the Japan Society for Aeronautical and Space Sciences, Aerospace Technology Japan (Web)　19　(4)　2021

    ISSN： 1884-0485

  7. 超小型衛星のターゲットポインティング制御を活用した地球観測システムの研究開発

    藤田伸哉, 桑原聡文, 坂本祐二, 栗原純一, 國森裕生, 竹中秀樹

    電気関係学会東北支部連合大会講演論文集(CD-ROM)　2020　2020

  8. High-resolution Earth Observation by 50-kg Class Microsatellites with Precision Ground Target Pointing

    藤田伸哉, 佐藤悠司, 坂本祐二, 桑原聡文, 栗原純一

    宇宙科学技術連合講演会講演集(CD-ROM)　64th　2020

    ISSN： 1884-1945

  9. Construction of ground station network system to support operation of micro satellite constellation

    坂本祐二, 藤田伸哉, 桑原聡文, 栗原純一

    宇宙科学技術連合講演会講演集(CD-ROM)　64th　2020

    ISSN： 1884-1945

  10. Orbit Demonstration Progress Report of RISESAT

    桑原聡文, 藤田伸哉, 佐藤悠司, 坂本祐二, 吉田和哉

    宇宙科学技術連合講演会講演集(CD-ROM)　64th　2020

    ISSN： 1884-1945

  11. A CubeSat mission “ASTERISC” of demonstrating the Bus System and Film-type Dust Sensor to Observe Cosmic Dusts and Space Debris

    石丸亮, 坂本祐二, 坂本祐二, 藤田伸哉, 前田恵介, 小林正規, 奥平修, 木村宏, 松井孝典

    宇宙科学技術連合講演会講演集(CD-ROM)　64th　2020

    ISSN： 1884-1945

  12. Initial In-orbit Results of MicroDragon

    平松崇, 山浦秀作, 戸梶歩, 白坂成功, 鶴田佳宏, 青柳賢英, 松本健, 中須賀真一, 栗原純一, 高橋幸弘, 桑原聡文, 坂本祐二, 吉田和哉, 増井博一, KIM Sang-kyun, 奥山圭一, CHO Mengu, ANH Tuan Pham

    宇宙科学技術連合講演会講演集(CD-ROM)　63rd　2019

    ISSN： 1884-1945

  13. Development and Ground Evaluation of Ground-Target Tracking Control of Microsatellite RISESAT

    FUJITA Shinya, SATO Yuji, KUWAHARA Toshinori, SAKAMOTO Yuji, YOSHIDA Kazuya

    Transactions of the Japan Society for Aeronautical and Space Sciences, Aerospace Technology Japan (Web)　17　(2)　2019

    ISSN： 1884-0485

  14. Development and On-orbit operation of Attitude Control System of the Microsatellite RISESAT

    藤田伸哉, 佐藤悠司, 桑原聡文, 坂本祐二, 吉田和哉

    宇宙科学技術連合講演会講演集(CD-ROM)　63rd　2019

    ISSN： 1884-1945

  15. Suggestion of autonomous operation methods for on-demand remote sensing system using microsatellite constellation

    坂本祐二, 桑原聡文, 藤田伸哉, 栗原純一, 國森裕生, 竹中秀樹

    宇宙科学技術連合講演会講演集(CD-ROM)　63rd　2019

    ISSN： 1884-1945

  16. Orbit Demonstration Progress Report of RISESAT

    桑原聡文, 藤田伸哉, 佐藤悠司, 坂本祐二, 吉田和哉, 栗原純一, 國森裕生, 竹中秀樹

    宇宙科学技術連合講演会講演集(CD-ROM)　63rd　2019

    ISSN： 1884-1945

  17. In-Orbit Demonstration of the Bus System and Film-type Dust Sensor to Observe Cosmic Dusts and Space Debris

    石丸亮, 坂本祐二, 藤田伸哉, 前田恵介, 小林正規, 奥平修, 木村宏, 松井孝典

    宇宙科学技術連合講演会講演集(CD-ROM)　63rd　2019

    ISSN： 1884-1945

  18. The preliminary experiment result using a 1kg class Optical Communication Transmitter and Optical Sensor on board a Microsatellite

    國森裕生, 竹中秀樹, 久保岡俊宏, 豊嶋守生, 桑原聡文, 藤田伸哉, 冨尾蓮花, 坂本祐二, 栗原純一

    宇宙科学技術連合講演会講演集(CD-ROM)　63rd　2019

    ISSN： 1884-1945

  19. 超小型衛星RISESAT搭載の海洋観測カメラによる沿岸域観測

    齊藤誠一, 平田貴文, ALABIA Irene, 平譯享, 平譯享, 栗原純一, 高橋幸弘, 坂本祐二, 桑原聡文, 藤田伸哉, 羽生浩介, 村田悠, SAKAL Morokot, 冨尾蓮花, 佐藤悠司, LEE Ming-An, 望月貫一郎, 高橋文宏, 村上浩

    日本海洋学会大会講演要旨集　2019　2019

  20. 東北大地上局および運用システムの10年間の実績

    坂本祐二, 桑原聡文, 藤田伸哉

    日本地球惑星科学連合大会予稿集(Web)　2019　2019

  21. Operation results and international collaborations on 50-kg microsatellite DIWATA-1 using satellite deployment service of International Space Station

    坂本祐二, 桑原聡文, 吉田和哉, 石田哲朗, 栗原純一, 高橋幸弘

    宇宙科学技術連合講演会講演集(CD-ROM)　62nd　2018

    ISSN： 1884-1945

  22. Development and Ground Evaluation of Attitude Control System of the Microsatellite RISESAT

    藤田伸哉, 佐藤悠司, 桑原聡文, 坂本祐二, 吉田和哉

    宇宙科学技術連合講演会講演集(CD-ROM)　62nd　2018

    ISSN： 1884-1945

  23. Film Dust Sensor for CubeSat to Observe Cosmic Dusts and Space Debris

    石丸亮, 小林正規, 奥平修, 前田恵介, 木村宏, 坂本祐二, 藤田伸哉, 黒澤耕介, 岡本尚哉

    宇宙科学技術連合講演会講演集(CD-ROM)　62nd　2018

    ISSN： 1884-1945

  24. Development Status of Micro-satellite RISESAT and Future Outlook

    桑原聡文, 吉田和哉, 坂本祐二

    宇宙科学技術連合講演会講演集(CD-ROM)　61st　2017

    ISSN： 1884-1945

  25. Design and Ground Evaluation of Attitude Control System of the Microsatellite RISESAT

    藤田伸哉, 佐藤悠司, 桑原聡文, 坂本祐二, 吉田和哉

    宇宙科学技術連合講演会講演集(CD-ROM)　61st　2017

    ISSN： 1884-1945

  26. Operation results of S-band beacon data downlink communication system for nanosatellite S-CUBE

    石丸亮, 坂本祐二, 小島要, 新家隆広, 望月知也, 藤田伸哉, 郷内稔也, 吉田和哉, 松井孝典

    宇宙科学技術連合講演会講演集(CD-ROM)　61st　2017

    ISSN： 1884-1945

  27. ソフトウェアによる電力収支シミュレーションの環境構築

    片桐寛人, 桑原聡文, 藤田伸哉, 佐藤悠司, 田場凌, 坂本祐二, 岡島礼奈

    日本機械学会スペース・エンジニアリング・コンファレンス(CD-ROM)　26th　2017

    ISSN： 2424-3191

  28. Development Status of Micro-satellite RISESAT

    60　4p　2016/09/06

    Publisher: 日本航空宇宙学会

    ISSN： 1884-1945

  29. フィリピン観測衛星DIWATA-1のバス系開発および運用報告

    坂本祐二, 桑原聡文, 吉田和哉

    宇宙科学技術連合講演会講演集(CD-ROM)　60th　2016

    ISSN： 1884-1945

  30. Attitude Determination of Microsatellite RISING-2 by Using High-Sensitivity Wide Field Camera

    59　4p　2015/10/07

    Publisher: 日本航空宇宙学会

    ISSN： 1884-1945

  31. 惑星観測を目指した極周回成層圏望遠鏡FUJIN

    前田惇徳, 田口真, 荘司泰弘, 中野壽彦, 高橋幸弘, 今井正尭, 合田雄哉, 吉田和哉, 坂本祐二

    日本地球惑星科学連合大会予稿集(Web)　2015　2015

  32. 国際宇宙ステーションからの雷放電と高高度発光現象の観測

    牛尾知雄, 佐藤光輝, 鈴木睦, 森本健志, 菊池博史, 菊池雅行, 足立透, 山崎敦, 高橋幸弘, INAN U., LINSCOTT I., 石田良平, 坂本祐二, 吉田和哉, 芳原容英, 阿部琢己, 中村正人, 織田裕久

    日本気象学会大会講演予稿集　(108)　2015

  33. 惑星観測を目指した極周回成層圏テレスコープFUJINの開発

    前田惇徳, 田口真, 荘司泰弘, 中野壽彦, 今井正尭, 合田雄哉, 高橋幸弘, 渡辺誠, 吉田和哉, 坂本祐二

    地球電磁気・地球惑星圏学会総会及び講演会予稿集(CD-ROM)　138th　2015

  34. O13-03 流星観測衛星S-CUBEのミッション紹介と開発進捗報告(口頭発表セッション13 ダスト・探査I,口頭発表)

    石丸 亮, 坂本 祐二, 小林 正規, 郷内 稔也, 藤田 伸哉, 千秋 博紀, 和田 浩二, 石橋 高, 黒澤 耕介, 山田 学, 阿部 新助, 吉田 和哉, 佐藤 光輝, 高橋 幸弘, 松井 孝典

    日本惑星科学会秋期講演会予稿集　2014　"O13-03"　2014/09/10

    Publisher: 日本惑星科学会

  35. 流星観測キューブサットS-CUBE(S3:Shootingstar Sensing Satellite)

    石丸亮, 坂本祐二, 小林正規, 郷内稔也, 藤田信哉, 竝木則行, 千秋博紀, 和田浩二, 山田学, 大野宗祐, 石橋高, 黒澤耕介, 荒井朋子, 細川繁, 阿部新助, 吉田和哉, 佐藤光輝, 高橋幸弘, 中須賀真一, 松井孝典

    スペースガード研究　(6)　2014

    ISSN： 1883-9622

  36. Results of GPM Piggyback Satellite HAYATO II

    森田大貴, 西尾正則, 中野大, 和合佐友里, 北迫千歩, 梅崎愛, 片野田洋, 林良太, 福島誠治, 前田智也, 船迫大志, 瀬戸山康之, 坂本祐二, 氏原秀樹

    電子情報通信学会技術研究報告　114　(87(SANE2014 21-42))　2014

    ISSN： 0913-5685

  37. 惑星観測を目指した極周回成層圏望遠鏡FUJIN

    前田惇徳, 田口真, 吉田和哉, 坂本祐二, 中野壽彦, 荘司泰弘, 高橋幸弘, 仲本純平, 今井正尭, 渡辺誠, 合田雄哉

    地球電磁気・地球惑星圏学会総会及び講演会予稿集(CD-ROM)　136th　2014

  38. 超小型地球観測衛星RISING‐2の開発および初期運用成果

    坂本祐二, 杉村伸雄, 冨岡義弘, 桑原聡文, 吉田和哉, 栗原純一, 福原哲哉, 高橋幸弘

    宇宙科学技術連合講演会講演集(CD-ROM)　58th　ROMBUNNO.1K07　2014

    ISSN： 1884-1945

  39. 小型衛星サイエンスカメラと光通信機器VSOTAおよび地上局の連携について

    國森裕生, 久保岡俊宏, 桑原聡文, 坂本祐二, 栗原純一

    宇宙科学技術連合講演会講演集(CD-ROM)　58th　ROMBUNNO.3C05　2014

    ISSN： 1884-1945

  40. Development and Operation Results of Ground Network System for Micro and Nano Satellites

    57　5p　2013/10/09

    Publisher: 日本航空宇宙学会

    ISSN： 1884-1945

  41. Detection of the orbital change with Ku band beacon of RAIKO

    57　6p　2013/10/09

    Publisher: 日本航空宇宙学会

    ISSN： 1884-1945

  42. S192024 Knowledge of Thermal Design for Micro and Nano Satellites Based on Design, Test, and Flight Data

    SAKAMOTO Yuji, TOMIOKA Yoshihiro, TANABE Yuta, KUWAHARA Toshinori, YOSHIDA Kazuya

    Mechanical Engineering Congress, Japan　2013　"S192024-1"-"S192024-5"　2013/09/08

    Publisher: The Japan Society of Mechanical Engineers

    More details Close

    Recently the activities for the development of micro- and nano- satellites are being increased, and Tohoku University has developed total 4 satellites in which 2 satellites are already in space. This paper shows the efficient thermal design techniques including the environmental test method are shown which have been accumulated through the sufficient experience. And the effectiveness of the method are shown by the comparison with analysis and real flight data.

  43. Presumption of Trajectory Deviations of a Cubesat Orbiting at Very Low Altitude based on Ku-band Beacon Observations

    NISHIO Masanori, MIYAMOTO Sho, KITASAKO Chiho, MORIMATUS Takehito, MORITA Hiroki, NAKANO Masaru, WAGO Sayuri, YAMAMICH Chizuru, SAKAMOTO Yuji

    IEICE technical report. Antennas and propagation　112　(384)　187-191　2013/01/23

    Publisher: The Institute of Electronics, Information and Communication Engineers

    ISSN： 0913-5685

    More details Close

    In Kagoshima University, development of a pico-satellite KSAT2 with a size of 10-cm cube is in progress in cooperation with local companies. This satellite is going to be orbited into an altitude of 400 km, and be affected a big orbital disturbance with the atmospheric drag. Therefore, a Ku-band beacon transmitter is equipped in the satellite for exploring a position of the satellite from the ground. The transmitter has an output of 1 mW and is installed separately from a transmitter for telemetry. Pico-satellite RAIKO equipped with a transmitter about the same with KSAT-2 was launched in the beginning of October, 2012. The satellite development group of Kagoshima University is receiving the Ku-band beacon of this satellite to check the orbit change of the satellite. In this report, situations of the Ku-band beacon reception and the satellite orbit change in the low altitude are shown.

  44. ほどよし二号の開発状況

    桑原聡文, 坂本祐二, 吉田和哉, 栗原純一, 高橋幸弘, 高田淳史, 山川宏

    宇宙科学技術連合講演会講演集(CD-ROM)　57th　ROMBUNNO.3O10　2013

    ISSN： 1884-1945

  45. 国際宇宙ステーションからの雷放電とスプライトの国際共同観測

    牛尾 知雄, 森本 健志, 佐藤 光輝, 鈴木 睦, 山崎 敦, 芳原 容英, 菊地 雅行, 高橋 幸弘, INAN Umran, 石田 良平, 坂本 祐二, 吉田 和哉, 阿部 琢美, 河崎 善一郎

    大気電気学会誌 = / Society of Atmospheric Electricity of Japan　6　(2)　82-82　2012/11/15

    ISSN： 1882-0549

  46. B4 Development Method of Command and Dat Handling System Based on Microsatellite RISING-2 and Cubesat RAIKO

    Sakamoto Yuji, Kuwahara Toshinori, Battazzo Steve, Fukuda Kazufumi, Yagisawa Hitoshi, Yoshida Kazuya

    2011　(20)　"B4-1"-"B4-5"　2012/01/26

    Publisher: The Japan Society of Mechanical Engineers

    ISSN： 0918-9238

    More details Close

    Tohoku University and Hokkaido University completed the development of 50-kg microsatellite RISING-2 for earth observation in 2011. It has a telescope with 5-m resolution, total 8 image sensors, and wheel-based attitude control system, for the observation missions of multi-spectrum cumulonimbus clouds and terrestrial lightning events such as sprite. The launch opportunity has not been decided yet, so the improvement of onboard codes for FPGA and CPU are being continued at this time. This paper shows the development method of command and data handling system (C&DH) based on the actual experience for the project RISING-2 and project RAIKO. This method and experience are expected to contribute for the development of future micro and nano satellites.

  47. 気球搭載望遠鏡による惑星大気観測

    山元夢摘, 田口真, 吉田和哉, 坂本祐二, 中野壽彦, 荘司泰弘, 高橋幸弘, 濱本昂, 今井正尭, 仲本純平

    地球電磁気・地球惑星圏学会総会及び講演会予稿集(CD-ROM)　132nd　2012

  48. 超小型人工衛星RISESATの姿勢制御系開発/評価環境

    桑原聡文, 坂本祐二, 吉田和哉, 冨岡義弘, 福田和史, 杉村伸雄, 福山雅人, 澁谷吉彦

    日本機械学会スペース・エンジニアリング・コンファレンス(CD-ROM)　20th　2012

    ISSN： 2424-3191

  49. RISING-2およびRAIKO開発に基づく超小型衛星のためのC&DHサブシステムの開発手法

    坂本祐二, 桑原聡文, BATTAZZO Steve, 福田和史, 八木澤仁史, 吉田和哉

    日本機械学会スペース・エンジニアリング・コンファレンス(CD-ROM)　20th　2012

    ISSN： 2424-3191

  50. 国際宇宙ステーション放出キューブサットRAIKOの開発および運用成果

    坂本祐二, 田邊勇太, 八木澤仁史, 杉村伸雄, 吉田和哉, 秋山演亮

    宇宙科学技術連合講演会講演集(CD-ROM)　56th　2012

    ISSN： 1884-1945

  51. 極周回成層圏テレスコープによる惑星大気観測

    田口真, 山元夢摘, 吉田和哉, 坂本祐二, 中野壽彦, 荘司泰弘, 高橋幸弘, 渡辺誠, 濱本昂, 今井正尭, 仲本純平

    日本天文学会年会講演予稿集　2012　2012

    ISSN： 1347-0639

  52. ほどよし2号機のミッションと開発状況

    桑原聡文, 坂本祐二, 吉田和哉, 栗原純一, 高橋幸弘, 高田淳史, 山川宏

    宇宙科学技術連合講演会講演集(CD-ROM)　56th　ROMBUNNO.2M12　2012

    ISSN： 1884-1945

  53. The Global Lightning and sprIte Measurement (GLIMS) mission on International Space Station

    Tomoo Ushio, Mitsuteru Sato, Takeshi Morimoto, Makoto Suzuki, Hiroshi Kikuchi, Atsushi Yamazaki, Yukihiro Takahashi, Yasuhide Hobara, Umran Inan, Umran Inan, Ivan Linscott, Ivan Linscott, Yuji Sakamoto, Yuji Sakamoto, Ryohei Ishida, Ryohei Ishida, Masayuki Kikuchi, Masayuki Kikuchi, Kazuya Yoshida, Kazuya Yoshida, Zen Ichiro Kawasaki

    IEEJ Transactions on Fundamentals and Materials　131　(12)　971-976　2011/12/01

    Publisher: The Institute of Electrical Engineers of Japan

    DOI： 10.1541/ieejfms.131.971 　

    ISSN： 0385-4205

  54. S192025 Pre-Flight Verification for the Bus System Development of Earth Observation Microsatellite RISING-2

    SAKAMOTO Yuji, KUWAHARA Toshinori, YOSHIDA Kazuya, TAKAHASHI Yukihiro

    Mechanical Engineering Congress, Japan　2011　"S192025-1"-"S192025-3"　2011/09/11

    Publisher: The Japan Society of Mechanical Engineers

    More details Close

    The development of 50-kg class microsatellite RISING-2 was started in July, 2009 by Tohoku Univ. and Hokkaido Univ. At the time of May, 2011, the fabrication and evaluation tests of engineering model (EM) and the fabrication of flight model (FM) were finished. The launch opportunity has been not decided yet. The satellite has a telescope with 10-cm diameter and 1-m focal length, and the resolution of image is 5 meters. It observes multi-spectrum images of cumulonimbus clouds using liquid crystal tunable filter as well as RGB color photos. Also, transient luminous events in upper atmosphere such as sprite are observed using CMOS sensors. This paper shows the final specifications of FM, and the verification tests of bus system.

  55. Lightning and sprite observation from international space station

    Tomoo Ushio, Mitsuteru Sato, Takeshi Morimoto, Makoto Suzuki, Hiroshi Kikuchi, Atsushi Yamazaki, Yukihiro Takahashi, Yasuhide Hobara, Umran Inan, Umran Inan, Ivan Linscott, Ivan Linscott, Yuji Sakamoto, Yuji Sakamoto, Ryohei Ishida, Ryohei Ishida, Masavuki Kikuchi, Masavuki Kikuchi, Kazuya Yoshida, Kazuya Yoshida, Zen Ichiro Kawasaki

    IEEJ Transactions on Fundamentals and Materials　131　(1)　16-20　2011/02/28

    Publisher: The Institute of Electrical Engineers of Japan

    DOI： 10.1541/ieejfms.131.16 　

    ISSN： 0385-4205

  56. B1 Trend of European Small Satellite Development Activities

    Kuwahara Toshinori, Sakamoto Yuji, Yoshida Kazuya

    2010　(19)　"B1-1"-"B1-4"　2011/01/27

    Publisher: The Japan Society of Mechanical Engineers

    ISSN： 0918-9238

    More details Close

    This paper briefly summarizes the trend of small satellite development activities in European community. Recently, the importance of small satellite development activity, especially in terms of education, is getting recognized in Europe and a large amount of organizations and institutions are now taking part of the stream. Though the initiation of the CubeSat projects in Europe was relatively late, there are nowadays not only CubeSat projects but also many middle-sized small satellites under development. In this paper some exemplary small satellite projects in Europe both CubeSats and middle-sized small satellites are described. Based on the experience of author obtained through a 5-years-long research activity at the University of Stuttgart in Germany, exemplary system architecture of modern middle-sized small satellites is described. Along the European small satellite development activities future key technologies are becoming available, which can be also of Japanese interest. For example, space plug and play avionics products marketed in Europe are possible targets to be introduced to Japanese future small satellites. The aspect that most of the European products are ITAR-free makes them very attractive to communities outside Europe including Japan. On the contrary, Japanese small satellites-related products and technologies will be highly welcomed by the European community. In this sense Europe can be one of the strong partners of Japan as well as a possible customer of Japanese small satellite technologies. The author strongly recommends that Japan actively cooperate with European community to achieve rapid technology development and demonstrations.

  57. F3 Evaluation of Efficient Development Methods of 50-kg Microsatellites Based on SPRITE-SAT and RISING-2

    Sakamoto Yuji, Kuwahara Toshinori, Yoshida Kazuya, Takahashi Yukihiro

    スペース・エンジニアリング・コンファレンス講演論文集 : Space Engineering Conference　2010　(19)　"F3-1"-"F3-6"　2011/01/27

    Publisher: The Japan Society of Mechanical Engineers

    ISSN： 0918-9238

    More details Close

    Tohoku University and Hokkaido University started the development of a new 50-kg microsatellite RISING-2 at July 2009. This satellite inherits the development technique of RISING (SPRITE-SAT) launched on January 2009. The progress is shown in this paper. Using a Cassegrain telescope with 10-cm diameter and 1-m focal length, earth surface is observed with 5-m resolution from 700-km-alt sun synchronous orbit. By 3-axis attitude stabilization using reaction wheels and star sensors, the designated area on earth surface can be observed. In addition to color images, multi-spectrum images of cumulonimbus are observed by using a liquid crystal tunable filter. As a secondary mission, transient luminous events such as sprite are observed, which is same mission as SPRITE-SAT.

  58. 気球搭載望遠鏡による惑星大気観測

    山元夢摘, 田口真, 吉田和哉, 坂本祐二, 中野壽彦, 藤村亮介, BATTAZZO Steve, 荘司泰弘, 高橋幸弘

    地球電磁気・地球惑星圏学会総会及び講演会予稿集(CD-ROM)　130th　2011

  59. 欧州における小型人工衛星開発の動向

    桑原聡文, 坂本祐二, 吉田和哉

    日本機械学会スペース・エンジニアリング・コンファレンス(CD-ROM)　19th　2011

    ISSN： 2424-3191

  60. SPRITE-SATおよびRISING-2開発に基づく50kg級超小型衛星の効率的な開発手法に関する評価

    坂本祐二, 桑原聡文, 吉田和哉, 高橋幸弘

    日本機械学会スペース・エンジニアリング・コンファレンス(CD-ROM)　19th　2011

    ISSN： 2424-3191

  61. F1 Development Status and Strategy of JEM-GLIMS Mission : 2nd report: What can Department of Mechanical Engineering of the University do?

    ISHIDA Ryohei, SATO Mitsuteru, USHIO Tomoo, SUZUKI Makoto, MORIMOTO Takeshi, SAKAMOTO Yuji

    The Proceedings of the Space Engineering Conference　2010　(0)　_F1-1_-_F1-4_　2011

    Publisher: The Japan Society of Mechanical Engineers

    ISSN： 0918-9238

    More details Close

    In this report, we describe the outline of the GLIMS equipment equipped with the JEM exposed facility and the development of the equipment as an engineer belonging to the department of mechanical engineering of the university. Especially, we developed the equipment by the cooperation of Department of Science and Department of Engineering in the development of this mission equipment without ordering to the specialty company of the space appliance. We describe how the teacher at the university that is involved in mechanical engineering should be related to development so that Department of Science may cooperate with Department of Engineering.

  62. A satellite control system and results of tracking operations for a very-low-earth-orbit satellite HAYATO

    HARADA Yuji, NISHIO Masanori, SAKAMOTO Yuji

    Technical report of IEICE. SAT　110　(256)　131-134　2010/10/21

    Publisher: The Institute of Electronics, Information and Communication Engineers

    ISSN： 0913-5685

    More details Close

    A pico-satellite HAYATO (KSAT) was launched on the piggyback of HIIA 17 from Tanegashima Space Center on May 21, 2010, and put into a circular orbit of altitude of 300 km. The satellite has a 10-cm cube structure, and its weight is 1.43 kg. Uplink and downlink frequencies are S-band and Ku-band, respectively. We had successfully caught telemetry signals with a ground control system at Kagoshima University after eleven days of the satellite launch. This is a first case of Ku-band operation for 10-cm cube satellites. After seven straight day's operation, we had lost signals. Despite of the unremitting work to seek the satellite, the altitude of the satellite rapidly delayed due to drag produced by an atmosphere and disappeared on July 14. In this report, outline of the ground control system and results of satellite tracking are described.

  63. BI-1-3 Development and Evaluation for Fine Optical Pointing Control System Using Tip-Tilt Mirror

    Yoshida Kazuya, Shoji Yasuhiro, Sakamoto Yuji, Taguchi Makoto, Takahashi Yukihiro

    Proceedings of the IEICE General Conference　2010　(1)　"SS-78"-"SS-79"　2010/03/02

    Publisher: The Institute of Electronics, Information and Communication Engineers

  64. A balloon-borne telescope developed for remote sensing of planets from the polar stratosphere

    TAGUCHI Makoto, SHOJI Yasuhiro, SAKAMOTO Yuji, YOSHIDA Kazuya, TAKAHASHI Yukihiro, TERAGUCHI Tomoko, OHNISHI Tomoya, BATTAZZO Steve, SATO Takao, HOSHINO Naoya, UNO Takeru, YOSHIMURA Atsushi

    JAXA research and development report　9　53-72　2010/03

    Publisher: Japan Aerospace Exploration Agency

    ISSN： 1349-1113

    More details Close

    A long-term continuous observation is essential for studies of time-dependent phenomena of the planetary atmospheres and plasmas. A balloon-borne telescope system has been developed for remote sensing of the planets from the polar stratosphere. In this system, a Schmidt-Cassegrain telescope with a 300-mm clear aperture is mounted on a gondola whose attitude is controlled by control moment gyros, an active decoupling motor, and attitude sensors. The gondola can float in the stratosphere for periods in excess of 1 week. A pointing stability of 0.1&quot;rms will be achieved by the cooperative operation of the following three-stage pointing devices: a gondola-attitude control system, twoaxis telescope gimbals for coarse guiding, and a tip/tilt mirror mount for guiding error correction. The first experiment of the balloon-borne telescope system was conducted on June 3, 2009 in Taikicho, Hokkaido targeting Venus. The balloon was launched at 4:10 JST and the system has been operating perfectly for two hours after launch. During the first level flight at an attitude of 14 km attitude control was activated. Oscillation of the azimuthal angle of the gondola was damped at an expected rate and the gondola was stabilized within an error of 1?rms for a several minutes. Unfortunately capture of Venus images by the telescope was aborted because of failure in the onboard computer occurred at two hours after launch. However, from the video signal from the Sun sensor azimuthal angular velocity of the free gondola is estimated to be 20°/min or slower. These results from the experiments including the ground-based tests suggest that the basic system concept of the balloon-borne telescope, especially the attitude control and tracking technology, is correct. A more robust and a dependable onboard computer is required for a future experiment.

  65. B2 Progress Report and Future Plan of Microsatellite RISING Series

    SAKAMOTO Yuji, YOSHIDA Kazuya, TAKAHASHI Yukihiro

    2009　(18)　35-39　2010/01/28

    Publisher: The Japan Society of Mechanical Engineers

    ISSN： 0918-9238

    More details Close

    The microsatellite RISING(SPRITE-SAT) developed by Tohoku University was launched in January 2009. The former part of this paper shows the outline of mission and system design. The operation result of initial phase and the reason of serious trouble are introduced. On July 2009, our team initiated the development of second microsatellite named RISING-2. This satellite has a high precision telescope and reaction wheels. The outline of this new project is shown in the latter part.

  66. 人工衛星管制のための移動式小型アンテナ開発及びネットワーク運用評価

    米山明里, 中野壽彦, 澤上友貴, 坂本祐二, 吉田和哉

    日本航空宇宙学会北部支部講演会ならびに再使用型宇宙推進系シンポジウム講演論文集　2010-11th　2010

  67. 惑星観測のための成層圏気球搭載用望遠鏡システムにおける指向制御技術の開発およびフライト報告

    坂本祐二, 荘司泰弘, 吉田和哉, 大西智也, 寺口朋子, 田口真, 吉村淳, 高橋幸弘

    日本航空宇宙学会北部支部講演会ならびに再使用型宇宙推進系シンポジウム講演論文集　2010-11th　2010

  68. 超小型衛星RISING-2姿勢制御系の開発

    福田和史, 中野壽彦, 坂本祐二, 吉田和哉, 高橋幸弘

    宇宙科学技術連合講演会講演集(CD-ROM)　54th　2010

    ISSN： 1884-1945

  69. 惑星観測のための気球搭載望遠鏡システムの開発

    中野壽彦, 坂本祐二, 吉田和哉, 莊司泰弘, 田口真, 山元夢摘, 高橋幸弘

    宇宙科学技術連合講演会講演集(CD-ROM)　54th　2010

    ISSN： 1884-1945

  70. A209 国際宇宙ステーションからの雷放電と高高度発光現象の観測(GLIMS)(降水システムI,一般口頭発表)

    牛尾 知雄, 森本 健志, 佐藤 光輝, 鈴木 睦, 山崎 敦, 芳原 容英, 菊地 雅行, 高橋 幸弘, Inan Umran, 石田 良平, 坂本 祐二, 吉田 和哉, 阿部 琢美, 河崎 善一郎

    大会講演予講集　97　52-52　2010

    Publisher: 日本気象学会

  71. E3 Development Status and Strategy of JEM-GLIMS Mission

    SATO Mitsuteru, USHIO Tomoo, ISHIDA Ryohei, SUZUKI Makoto, MORIMOTO Takeshi, SAKAMOTO Yuji

    The Proceedings of the Space Engineering Conference　2009　(0)　97-101　2010

    Publisher: The Japan Society of Mechanical Engineers

    ISSN： 0918-9238

    More details Close

    In order to study the generation mechanism of lightning-associated transient luminous events (TLEs) and the relationship between lightning and TLEs, we will carry out the lightning and TLE observation at Exposed Facility of Japanese Experiment Module (JEM-EF) of International Space Station (ISS). In this mission named JEM-GLIMS (Global Lightning and sprlte MeasurementS on JEM-EF) two kinds of optical instruments and two sets of radio receivers will be integrated into the Multi mission Consolidated Equipment (MCE) which is the bus system and will be installed at JEM-EF finally. For the development of the GLIMS instruments, mechanical FEM analysis and thermal analysis are the important tasks to be performed by the mission team. Science group of the GLIMS mission has contacted to professors who belong to the department of engineering in an university and are an expert of the mechanical and thermal analysis. By their tremendous cooperation, GLIMS mission could pass the numerous reviews. Though many science mission using very small satellite will be planned in near future, strong mutual cooperation between science group and engineering group is important.

  72. 国際宇宙ステーションからの雷放電・スプライト観測計画 : JEM-GLIMSミッション

    佐藤 光輝, 牛尾 知雄, 森本 健志, 高橋 幸弘, 芳原 容英, 菊池 雅行, 鈴木 睦, 山崎 敦, 阿部 琢美, 吉田 和哉, 坂本 祐二, 奥山 圭一, 石田 良平, 河崎 善一郎

    大気電気学会誌 = / Society of Atmospheric Electricity of Japan　3　(2)　60-61　2009/10/30

    ISSN： 1882-0549

  73. 東北大学スプライト観測衛星(SPRITE-SAT)の姿勢制御系

    澤上友貴, 坂本祐二, 吉田和哉, 高橋幸弘

    日本航空宇宙学会北部支部講演会ならびに再使用型宇宙推進系シンポジウム講演論文集　2009-10th　2009

  74. 東北大学スプライト観測衛星(SPRITE-SAT)の構体系・熱系

    坂本祐二, 滝内圭, 中里泰裕, 澤上友貴, 氏家恵理子, 吉田和哉, 高橋幸弘

    日本航空宇宙学会北部支部講演会ならびに再使用型宇宙推進系シンポジウム講演論文集　2009-10th　2009

  75. 惑星観測のための成層圏気球搭載用望遠鏡システムにおける指向制御技術の開発およびフライト報告

    坂本祐二, 荘司泰弘, 大西智也, 吉田和哉, 高橋幸弘, 田口誠

    宇宙科学技術連合講演会講演集(CD-ROM)　53rd　2009

    ISSN： 1884-1945

  76. TARANIS衛星及びJEM-GLIMSに搭載するフォトメータの開発

    吉田健悟, 佐藤光輝, 高橋幸弘, 吉田和哉, 坂本祐二, 鈴木睦, 牛尾知雄, FARGES Thomas, BLANC Elisabeth

    地球電磁気・地球惑星圏学会総会及び講演会予稿集(CD-ROM)　126th　2009

  77. GLIMSミッションに期待される科学~雷放電~

    森本健志, 牛尾知雄, 佐藤光輝, 高橋幸弘, INAN Umran, 芳原容英, 菊池雅行, 鈴木睦, 山崎敦, 阿部琢美, 吉田和哉, 坂本祐二, 奥山圭一, 石田良平, 河崎善一郎

    大気圏シンポジウム・講演集(Web)　23rd　2009

  78. GLIMSミッションに期待される科学:地球ガンマ線現象

    高橋幸弘, 嘉瀬浩美, 牛尾知雄, 森本健志, 佐藤光輝, INAN Umran, 芳原容英, 菊池雅行, 鈴木睦, 山崎敦, 阿部琢美, 吉田和哉, 坂本祐二, 奥山圭一, 石田良平, 河崎善一郎

    大気圏シンポジウム・講演集(Web)　23rd　2009

  79. GLIMSミッションに期待される科学:高高度発光現象

    佐藤光輝, 牛尾知雄, 森本健志, 高橋幸弘, INAN Umran, 芳原容英, 菊池雅行, 石田良平, 吉田和哉, 坂本祐二, 奥山圭一, 河崎善一郎, 鈴木睦, 山崎敦, 阿部琢美

    大気圏シンポジウム・講演集(Web)　23rd　2009

  80. SPRITE-SATと地上観測連携によるスプライト現象解明の戦略

    高橋幸弘, 坂野井健, 笠羽康正, 佐藤光輝, 高島健, 吉田和哉, 坂本祐二, 氏家恵理子, 近藤哲志

    地球電磁気・地球惑星圏学会総会及び講演会予稿集(CD-ROM)　124th　2008

  81. 観測ロケット搭載用撮像観測装置のポインティング制御

    荘司泰弘, 島崎隼一, 吉川岳, 坂本祐二, 高橋幸弘, 吉田和哉

    日本航空宇宙学会北部支部講演会講演論文集　2007　2007

  82. 大学小型科学衛星SPRITE-SATによるスプライト及び地球ガンマ線の観測

    高橋幸弘, 上田真也, 坂野井健, 近藤哲志, 佐藤光輝, 吉田和哉, 坂本祐二

    地球電磁気・地球惑星圏学会総会及び講演会予稿集(CD-ROM)　122nd　2007

  83. 気球搭載望遠鏡による高精度星像追尾技術に関する研究

    金澤知明, 樋田敏浩, 荘司泰弘, 坂本祐二, 田口真, 吉田和哉

    日本航空宇宙学会北部支部講演会講演論文集　2007　2007

  84. 気球望遠鏡による金星観測

    星野直哉, 高橋幸弘, 田口真, 吉田和哉, 坂本祐二, 金澤知明, 佐藤隆雄, 澤上友貴

    地球電磁気・地球惑星圏学会総会及び講演会予稿集(CD-ROM)　122nd　2007

  85. Space Development Projects for Scientific Missions at Tohoku University-Stratosphere Balloon, Sounding Rocket, and Micro Satellite

    坂本祐二, 荘司泰弘, 上田真也, 木村一貴, 堀内貴史, 高橋幸弘, 吉田和哉

    宇宙科学技術連合講演会講演集(CD-ROM)　50th　2006

    ISSN： 1884-1945

Show all ︎Show first 5

Books and Other Publications 1

  1. マイクロサット開発入門

    東北大学超小型衛星開発チーム, 吉田和哉

    東北大学出版会　2011

Presentations 51

  1. Yuji Sakamoto, Toshinori Kuwahara, Kazuya Yoshida, "Methods for Development and Operation of Microsatellite Bus System and Ground Station in PHLMICROSAT Project,"

    日本地球惑星連合2017年大会, 幕張, 2017年5月　2017/05

  2. 坂本祐二, 桑原聡文, 吉田和哉「フィリピン観測衛星DIWATA-1 のバス系開発および運用報告」

    第60回宇宙科学技術連合講演会, 函館市, 2016年9月　2016/09

  3. Yuji Sakamoto, Ryo Ishimaru, Alvin E. Retamar, "Operation System for Micro and Nano Satellites by Low-Cost Ground Station Network," International-presentation

    The 14th International Conference on Space Operations (SpaceOps 2016), Daejeon, Korea　2016/05

  4. 坂本祐二, 杉村伸雄, 福田和史, 桑原聡文, 吉田和哉「高感度魚眼カメラを用いたRISING-2 衛星の姿勢決定」

    第59回宇宙科学技術連合講演会, 鹿児島市, 2015年11月　2015/11

  5. Development and Flight Results of Microsatellite Bus System for RISING-2 International-presentation

    the 30th International Symposium on Space Technology and Science (30th ISTS), Kobe, Japan, July 4 - 10, 2015　2015/06

  6. Flight Verification of Attitude Determination Methods for Microsatellite RISING-2 Using Magnetometers, Sun Sensors, Gyro Sensors, and Observation Images International-presentation

    the 30th International Symposium on Space Technology and Science (30th ISTS), Kobe, Japan, July 4 - 10, 2015　2015/06

  7. Development of the Satellite Bus System for PHL-MICROSAT International-presentation

    日本地球惑星連合2015年大会　2015/05

  8. Development and Operation Results of Cubesat International-presentation

    21st Asia-Pacific Regional space Agency Forum　2014/12

  9. 超小型地球観測衛星RISING-2のバスシステムに関する軌道上評価

    5th UNISEC Space Takumi Conference　2014/12

  10. 超小型地球観測衛星RISING-2 の開発および初期運用成果

    第58回宇宙科学技術連合講演会　2014/11

  11. 超小型衛星のための地上局ネットワークの構築と運用成果

    第57回宇宙科学技術連合講演会　2013/10

  12. 解析・試験・運用を通して得られた超小型衛星の熱設計に関する知見

    日本機械学会2013年度年次大会　2013/09

  13. 国際宇宙ステーション放出キューブサットRAIKOの開発および運用成果

    UNISEC Space Takumi Conference for Practical Study of Problem Finding and Solving in Space System　2012/12

  14. 国際宇宙ステーション放出キューブサットRAIKOの開発および運用成果

    第56回宇宙科学技術連合講演会　2012/11

  15. 超小型衛星のための国際ネットワーク軌道決定システムの構築

    日本機械学会2012年度年次大会　2012/09

  16. ハードウェアシミュレータによる超小型衛星の電源系性能評価

    UNISEC Space Takumi Conference for Practical Study of Problem Finding and Solving in Space System　2012/07

  17. Progress Report of Development of microsatellite RISING-2 for cumulonimbus and sprite observation by multi-spectrum telescope system

    日本地球惑星連合2012年大会　2012/05

  18. RISING-2およびRAIKO開発に基づく超小型衛星のためのC&DHサブシステムの開発手法

    第20回スペース・エンジニアリング・コンファレンス　2012/01

  19. GLIMS機器の熱設計と構造設計～熱設計編～

    日本機械学会 宇宙工学部門 No.11-98 実践セミナー　2011/11

  20. 50kg級超小型衛星の効率的な熱設計および評価手法

    第55回宇宙科学技術連合講演会　2011/11

  21. 超小型地球観測衛星RISING-2のバスシステム開発に関する地上評価手法

    日本機械学会2011年度年次大会　2011/09

  22. Development Status and Operation Plan of 50-kg Microsatellite RISING-2 for Earth Observations by Multi-Spectrum Instruments International-presentation

    The 28th International Symposium on Space Technology and Science (ISTS)　2011/06

  23. Orbit Determination System with Reasonable Performance Using Low-Cost Ground Station for Nanosatellite Projects International-presentation

    The 28th International Symposium on Space Technology and Science (ISTS)　2011/06

  24. Progress Report of the Development of microsatellite RISING-2 for cumulonimbus and sprite observation by multi-spectrum instruments

    日本地球惑星連合2011年大会　2011/05

  25. SPRITE-SATおよびRISING-2開発に基づく50kg級超小型衛星の効率的な開発手法に関する評価

    第19回スペース・エンジニアリング・コンファレンス　2011/01

  26. 超小型衛星運用局のための低コスト簡易軌道決定システム

    第54回宇宙科学技術連合講演会　2010/11/19

  27. 東北大学/北海道大学による超小型地球観測衛星RISING-2の開発

    第54回宇宙科学技術連合講演会　2010/11/17

  28. Development of the Microsatellite RISING-2 by Tohoku University and Hokkaido University International-presentation

    61th International Astronautical Congress　2010/09/27

  29. 東北大学/北海道大学による超小型地球観測衛星RISING-2の開発

    日本機械学会2010年度年次大会　2010/09/06

  30. Development of the microsatellite RISING-2 by Tohoku University and Hokkaido University

    2010年度日本地球惑星連合大会　2010/05/28

  31. 超小型衛星RISINGシリーズの開発と今後の展望

    第18回スペース・エンジニアリング・コンファレンス　2010/01/29

  32. 東北大学スプライト観測衛星(SPRITE-SAT)の開発および運用報告

    日本機械学会2009年度年次大会　2009/09/15

  33. 惑星観測のための成層圏気球搭載用望遠鏡システムにおける指向制御技術の開発およびフライト報告

    第53回宇宙科学技術連合講演会　2009/09/09

  34. Pre-Flight Analysis, Test Evaluation and Flight Verification of the Thermal System of Tohoku University SPRITE-SAT International-presentation

    The 27th International Symposium on Space Technology and Science　2009/07

  35. Development and Flight Data Analysis of the Attitude Determination and Control System of Tohoku University SPRITE-SAT International-presentation

    The 27th International Symposium on Space Technology and Science　2009/07

  36. Report of the development and the initial operation of Tohoku University SPRITE-SAT (RISING) for sprites and terrestrial gamma-ray flashes observation

    日本地球惑星連合大会　2009/05

  37. 東北大学スプライト観測衛星(SPRITE-SAT)の構体系・熱系

    日本航空宇宙学会北部支部 2009年講演会　2009/03/11

  38. 新型伸展マストを搭載する東北大学SPRITE-SATの姿勢制御系

    第52回宇宙科学技術連合講演会　2008/11/05

  39. Development of the Attitude Control System for Tohoku University SPRITE-SAT Using a New-Model Deployable Mast International-presentation

    59th International Astronautical Congress　2008/09/29

  40. Dynamic Modeling and Experimental Verification of the Pointing Technology in Balloon-Borne Telescope System for Optical Remote Sensing of Planets International-presentation

    26th International Symposium on Space Technology and Science (26th ISTS), Hamamatsu, Japan, June 2-6, 2008, 2008-d-25.　2008/06/02

    More details Close

    Yuji Sakamoto, Tomoaki Kanazawa, Yasuhiro Shouji, Yukihiro Takahashi, Kazuya Yoshida, Makoto Taguchi

  41. Development of Tohoku University SPRITE-SAT

    日本地球惑星科学連合2008年大会　2008/05/25

  42. UNISEC/GSNワーキンググループによる大学衛星のための地上局ネットワークシステムの開発および活動

    SANE/SAT研究会　2008/02/28

  43. 東北大学における宇宙開発プロジェクト～成層圏気球・観測ロケット・小型人工衛星

    第51回宇宙科学技術連合講演会　2007/10/29

  44. 東北大学スプライト観測衛星の開発

    2007年度 日本地球惑星連合大会　2007/05/24

  45. 東北大学における理学ミッションのための宇宙開発～成層圏気球・観測ロケット・小型人工衛星

    第50回宇宙科学技術連合講演会　2006/11/08

  46. 小口径電波干渉計による低高度地球周回衛星の軌道決定

    先進的軌道計測・決定技術に関する研究会　2006/10/31

  47. 電波干渉計を利用した地上観測によるテザー衛星の軌道決定

    第49回宇宙科学技術連合講演会　2005/11

  48. 超小型テザー衛星QTEX (3) 姿勢制御系

    第48回宇宙科学技術連合講演会　2004/11

  49. 単独局によるテザー衛星システムの軌道決定手法

    第47回宇宙科学技術連合講演会　2003/11

  50. Low-Cost Orbit Determination System for a CubeSat

    the 1st International CubeSat Symposium　2003/03/10

  51. 超小型テザー衛星QUEST (Kyushu-U.S. Experimental Satellite Tether) の開発計画

    第43回宇宙科学技術連合講演会　1999/10

Show all Show first 5

Industrial Property Rights 1

  1. 軌道決定装置、軌道決定方法、及びコンピュータプログラム

    西尾正則, 坂本祐二

    特許第4937613号

    Property Type: Patent

Research Projects 14

  1. PCIEERD（フィリピン国政府）地球観測小型衛星の開発 Competitive

    System: Funded Research

    2015/01 - Present

  2. 極周回成層圏テレスコープによる金星大気の研究 Competitive

    System: Grant-in-Aid for Scientific Research

    2012/04 - Present

  3. 超小型ナノサットに搭載可能な全方位カメラによる衛星姿勢決定ユニットの試作と評価 Competitive

    System: Grant-in-Aid for Scientific Research

    2016/04 - 2019/03

  4. A study on temporal variation of the Venus atmosphere using a circumpolar stratospheric telescope FUJIN

    TAGUCHI Makoto

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: Rikkyo University

    2015/04/01 - 2018/03/31

    More details Close

    The circumpolar stratospheric telescope FUJIN-2 has been developed for observations of planetary atmospheres and plasmas. The dynamics, chemistry and identification of an UV abosorber of the Vinus atmosphere are selected as the first scientific target. Development of the hardware of FUJIN-2 has been promoted based on the experimental data obtained by FUJIN-1. Development of the optics, electrical and attitude control systems has been completed. A balloon experiment at ESRANGE in Kiruna, Sweden has been proposed. As an important scientific result about the Venus atmosphere large stationary thermal structures have been discovered by the Longwave Infrared Camera onboard the Venus orbiter Akatsuki. From detaied analysis of the observed data it is suggested that atmospheric gravity waves generated in the lower atmosphere by the solar radiation energy propagate to the cloud-top altitudes forming the structures.

  5. Study on relationship between strong rainfall and local circulation in the Fukui plain

    Nakajo Tomoyuki, Aoyama Takashi, Ujihashi Yasuyuki, Kato Yoshinobu, Hashiguchi Hiroyuki, YAMAMOTO Masayuki, Takahashi Yukihiro, Sakamoto Yuji, Kuwahara Toshinori

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (C)

    Institution: Fukui University of Technology

    2013/04/01 - 2016/03/31

    More details Close

    We statistically compared wind data at lower troposphere based on wind profiler radars with precipitation distribution data based on C-band weather radar in order to investigate the effects of interaction between terrain and lower wind on precipitation patterns in the Fukui plain. The results show detailed precipitation patterns in the Fukui plain are classified by wind at altitude lower than 1 km. In particular, localized strong rainfall often occurs in the northern area of Fukui plain in the condition that wind at altitude lower than 1 km is westerly. These results indicate the measurement of lower wind at altitude lower than 1 km is important on local weather forecasting.

  6. 50kg 級超小型衛星フライトモデル「RISING-2」及びマルチスペクトル望遠撮像系の開発 Competitive

    System: The Other Research Programs

    2009/04 - 2015/03

  7. 超小型衛星のための国際ネットワーク軌道決定システムの構築および観測実験 Competitive

    System: Grant-in-Aid for Scientific Research

    2011/04 - 2014/03

  8. 日本主導の超小型衛星網UNIFORMの基盤技術研究開発と海外への教育貢献 Competitive

    System: The Other Research Programs

    2010/04 - 2014/03

  9. 日本発"ほどよし信頼性工学"を導入した超小型衛星による新しい宇宙開発・利用パラダイムの構築 Competitive

    System: The Other Research Programs

    2010/04 - 2014/03

  10. 東北大学スプライト観測衛星ＳＰＲＩＴＥ－ＳＡＴの開発 Competitive

    System: Grant-in-Aid for Scientific Research

    2006/04 - 2011/03

  11. 成層圏気球プラットフォームを活用した金星撮像のための気球望遠鏡ペイロードの開発 Competitive

    2006/04 - 2011/03

  12. 鹿児島人工衛星KSATの開発 Competitive

    2005/04 - 2010/05

  13. 小型地上局クラスタによる新方式ＶＬＢＩ軌道決定システムの基礎実験 Competitive

    System: Grant-in-Aid for Scientific Research

    2008/04 - 2010/03

  14. 電波干渉計を利用した地球周回衛星の高精度軌道決定 Competitive

    System: Grant-in-Aid for Scientific Research

    2006/04 - 2008/03

Show all Show first 5

Other 3

  1. 50kg級小型衛星における姿勢制御性能の解析

    More details Close

    東北大学にて開発中の50kg衛星RISING-2を題材として、その姿勢制御性能を地上試験データに基づいてシミュレーション解析する。また同衛星が平成26年度上期中に打ち上げられた場合、軌道上での運用データを取得し、地上評価データと比較する。

  2. 地上局ネットワーク構築のための小型衛星用簡易型受信装置の開発

    More details Close

    小型衛星地上局として候補となっている地上局のインタフェース仕様の調査を実施し，候補地上局の要求を包絡する仕様を定義した後，受信装置の試作・評価を行う。

  3. 50kg 級超小型衛星フライトモデル「RISING-2」及びマルチスペクトル望遠撮像系

    More details Close

    高解像度地球撮像を目指した技術実証ミッション、そして雲および雷放電関連現象の最先端理学観測ミッションを実施する、50kg 級超小型衛星「RISING-2」のフライトモデルを開発する。また、マルチスペクトル望遠撮像系を新規開発し、本衛星へ搭載する。