Feasibility Analysis of RAIM to Provide LPV-200 Approaches with Future GPS

Young C. Lee and Michael P. McLaughlin

Abstract:	The FAA formed a panel with an objective to evaluate GNSS-based architectures to provide robust LPV-200 service worldwide circa 2020–2025. One of a few architectures considered by the panel relies on Receiver Autonomous Integrity Monitoring (RAIM). In the 2020 to 2025 time frame, it is expected that a dramatically improved capability for modernized GPS will be available which will include multiple-frequency civil signals available on the satellites and possibly a larger number of satellites. RAIM could be a viable means to provide worldwide LPV-200 service. This paper develops and analyzes two RAIM methods to accommodate the new LPV-200 requirements which are still being defined by the FAA. In particular, a new approach is considered in which the integrity risk requirement is freely allocated among different satellite integrity failures in order to achieve a higher RAIM availability. The results show that, in order to provide worldwide LPV-200 service with a sufficiently high availability using this method, a constellation of at least 30 satellites is required.
Published in:	Proceedings of the 20th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2007) September 25 - 28, 2007 Fort Worth Convention Center Fort Worth, TX
Pages:	2898 - 2910
Cite this article:	Lee, Young C., McLaughlin, Michael P., "Feasibility Analysis of RAIM to Provide LPV-200 Approaches with Future GPS," Proceedings of the 20th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2007), Fort Worth, TX, September 2007, pp. 2898-2910.
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