Solving Integrity Insufficiencies of Sat Nav Systems with Complementary Navigation Information

Stefan Vieweg and Carsten Butzmuehlen

Abstract:	In order to comply with the required navigation performance (RNP) parameters and the integrity, a continuous monitoring of the GNSS status is essen- tially needed. The certification process for satellite navigation as “sole means“, primary navigation system is difficult extremely unlikely for high precision / safety critical procedures in aviation applications, due to insufficiencies in the dynamic environment of the vehicle (satellite masking, mul-tipath, cycle slips, etc.). A combination of satellite information with inertial sensors, which have dissimilar characteristics to satellite navigation, is proposed in this paper. The inertial sensors are an ideal complement to GNSS due to their good dynamic properties, although they can be characterized by a longterm drift. A complementary satellite/inertial navigation system enables the estimation and compensation of different sensor errors of the inertial as well as the satellite subsystem within the Airborne Autonomous Integrity Monitoring (AAIM). Some concepts for onboard integrily monitoring, which have shown the potential to compensate the insufficiencies of RAIM, are discussed in this paper.
Published in:	Proceedings of the 8th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1995) September 12 - 15, 1995 Palm Springs, CA
Pages:	2005 - 2013
Cite this article:	Vieweg, Stefan, Butzmuehlen, Carsten, "Solving Integrity Insufficiencies of Sat Nav Systems with Complementary Navigation Information," Proceedings of the 8th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1995), Palm Springs, CA, September 1995, pp. 2005-2013.
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