Advanced RAIM for Mega-Constellations

Juan Blanch, Sukrut Oak, Sam Pullen, Sherman Lo, Todd Walter

Peer Reviewed

Abstract:	We describe a practical method to enable advanced RAIM in mega-constellations, where the number of ranging sources and the fault rates could be very high (thus rendering standard approaches potentially impractical). The method is based on a combination of a branch-and-bound approach and on the Gershrogin circle theorem. We evaluate the performance of ARAIM in mega-constellations for fault rates that would be unfeasible with standard RAIM and ARAIM approaches. We find that for constellations where 100 to 200 satellites may be in view for a user, the proposed approach would enable the computation of finite and useful Protection Levels with fault rates as high as 10^-2 per hour.
Published in:	Proceedings of the 2024 International Technical Meeting of The Institute of Navigation January 23 - 25, 2024 Hyatt Regency Long Beach Long Beach, California
Pages:	258 - 271
Cite this article:	Blanch, Juan, Oak, Sukrut, Pullen, Sam, Lo, Sherman, Walter, Todd, "Advanced RAIM for Mega-Constellations," Proceedings of the 2024 International Technical Meeting of The Institute of Navigation, Long Beach, California, January 2024, pp. 258-271. https://doi.org/10.33012/2024.19497
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