GPS-based Space Navigation: Comparison of Kalman Filtering Schemes

R. Campana, L. Marradi and A. Saponara

Abstract:	LABEN (an ALENIA SPAZIO Company) has been deeply involved in development of on-board equipment for GPS-based space navigation since 1994. The gained experience has highlighted the importance of having an on-board navigation estimation both accurate and computationally low-cost. In this application field, the present paper describes the results of a work carried out to optimize the navigation solution of a space GPS receiver for Low Earth Orbit applications. The work consisted in the design of a Navigation Kalman Filter, the analysis of new estimation approaches and performance comparison among the developed algorithms. An existing filtering scheme has been analyzed and modified in order to achieve better estimation of the spacecraft state vector and multi-mission applicability. The presented simulation results are based on data from a GPS Multi-Channel Simulator considering two typical orbit scenarios with different GPS visibility characteristics. The response of filtering schemes to maneuvers and algorithm impact on the computational load have been also investigated.
Published in:	Proceedings of the 13th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 2000) September 19 - 22, 2000 Salt Palace Convention Center Salt Lake City, UT
Pages:	1636 - 1645
Cite this article:	Campana, R., Marradi, L., Saponara, A., "GPS-based Space Navigation: Comparison of Kalman Filtering Schemes," Proceedings of the 13th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 2000), Salt Lake City, UT, September 2000, pp. 1636-1645.
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