Differential RAIM and Relative RAIM for Orbit Ephemeris Fault Detection

M. Joerger, S. Stevanovic, S. Khanafseh, and B. Pervan

Abstract:	This paper introduces new monitors for the detection of orbit ephemeris faults affecting differential carrier phase measurements in a shipboard aircraft landing application. Two shipboard monitors are first designed. While they provide high detection performance against two targeted fault types, they are ineffective against the other types of orbit ephemeris faults. In response, to protect the user against the entire threat space, a new airborne receiver autonomous integrity monitoring (RAIM) algorithm is developed. This unified RAIM approach (URAIM) exploits both differential RAIM (which is most efficient at air-ship separation distances larger than 5 nmi) and relative RAIM (which, in contrast, performs better as the aircraft approaches the ship). Performance evaluations demonstrate URAIM's potential to detect all types of orbit ephemeris faults using a single, unified residual-based RAIM method.
Published in:	Proceedings of IEEE/ION PLANS 2012 April 24 - 26, 2012 Myrtle Beach Marriott Resort & Spa Myrtle Beach, South Carolina
Pages:	174 - 187
Cite this article:	Joerger, M., Stevanovic, S., Khanafseh, S., Pervan, B., "Differential RAIM and Relative RAIM for Orbit Ephemeris Fault Detection," Proceedings of IEEE/ION PLANS 2012, Myrtle Beach, South Carolina , April 2012, pp. 174-187. https://doi.org/10.1109/PLANS.2012.6236879
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