Flight Data Analysis of OREX Onboard GPS Receiver

Hiroshi Tomita, Hideto Suzuki, Shuichi Matsumoto, Masatoshi Harigae, Atsushi Itsukaichi, Hiroaki Maeda, and Tomoyuki Miyano

Abstract:	NASDA conducted the first Japanese onboard GPS receiver (GPSR) experiment, within the Orbital Re- entry Experiment (OREX), which was launched by the first test flight of the H-II launch vehicle. The objective of this experiment was to evaluate the function and performance of the GPS navigation system during the orbit and the reentry phase. GPSR in OREX, newly developed for this experiment, performed the signal acquisition and the measurement during the orbit as expected. The blackout of the GPS signal was observed at the re-entry phase. Although the onboard GPS navigation was not successful, the orbit of OREX was determined by post- flight GPS navigation analyses in cooperation with NAL. Also, DGPS navigation with a ground station obtained a good result.
Published in:	Proceedings of the 7th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1994) September 20 - 23, 1994 Salt Palace Convention Center Salt Lake City, UT
Pages:	1211 - 1220
Cite this article:	Tomita, Hiroshi, Suzuki, Hideto, Matsumoto, Shuichi, Harigae, Masatoshi, Itsukaichi, Atsushi, Maeda, Hiroaki, Miyano, Tomoyuki, "Flight Data Analysis of OREX Onboard GPS Receiver," Proceedings of the 7th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1994), Salt Lake City, UT, September 1994, pp. 1211-1220.
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