Satellite-to-ground optical communication system on Low Earth Orbit micro-satellite RISESAT

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

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Within the scope of a Japanese FIRST (Funding Program for World-Leading Innovative R&D on Science and Technology) program led by Professor Nakasuka of University of Tokyo, Tohoku University is developing a 50kg-class international scientific microsatellite named RISESAT. In addition to various scientific instruments, RISESAT is also equipped with a laser communication terminal VSOTA, developed by Japanese National Institute of Information and Communications Technology (NICT). Tohoku University and NICT are now developing the engineering model of the satellite and undertaking its ground tests. VSOTA has two different wavelengths of laser outputs in 980 nm and 1540nm. The collimators for these are fixed with the satellite structure pointing toward the Earth direction. RISESAT aims to control the direction of the laser beams being precisely pointed toward the NICT's optical ground station with a pointing accuracy of better than 0.4 deg (3σ) during the fly-by. RISESAT can send actual scientific data obtained by payload instruments through this optical communication link. This will be the world first demonstration of microsatellite-to-ground optical downlink. This will bring innovation to misrosatellite's system engineering, utilization, and communication network. This paper describes the detailed specification, system design strategy, and real-life implementation of laser communication system on the micro-satellite RISESAT.

Original languageEnglish
Title of host publication2012 IEEE/SICE International Symposium on System Integration, SII 2012
Pages939-944
Number of pages6
DOIs
Publication statusPublished - 2012 Dec 1
Event2012 IEEE/SICE International Symposium on System Integration, SII 2012 - Fukuoka, Japan
Duration: 2012 Dec 162012 Dec 18

Publication series

Name2012 IEEE/SICE International Symposium on System Integration, SII 2012

Other

Other2012 IEEE/SICE International Symposium on System Integration, SII 2012
CountryJapan
CityFukuoka
Period12/12/1612/12/18

ASJC Scopus subject areas

  • Information Systems

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