Update on GPS Integrity Requirements of the RTCA MOPS

R. Grover Brown, Gerald Y. Chin, John H. Kraemer

Abstract:	Special Committee 169 of the Radio Technical Commission for Aeronautics has completed its work on the Minimun Operational Performance Standards (MOPS) for GPS as a supplemental navigation system. This paper presents a summary of the GPS integrity requirements as specified in the MOPS. Special attention is given to the testing requirements as they pertain to Receiver Autonomous Integrity Monitoring @AIM). These procedures were revised in the latter meetings of SC 169 to require testing against worst-case satellite geometries rather than global averaging over all geometries as envisioned originahy. This change in philosophy has a significant effect on RAIM availability, especialiy for nonprecision approach where the aiarm limit is severe. Estimates for RAIM availability for various phases of flight and satellite configurations are presented. Also, a new criterion for judging the quality of the satellite geometry for failure detection purposes is presented.
Published in:	Proceedings of the 4th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1991) September 11 - 13, 1991 Albuquerque, NM
Pages:	761 - 772
Cite this article:	Brown, R. Grover, Chin, Gerald Y., Kraemer, John H., "Update on GPS Integrity Requirements of the RTCA MOPS," Proceedings of the 4th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1991), Albuquerque, NM, September 1991, pp. 761-772.
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