Availability Assessment of ARAIM FDE with Time-Correlated Errors

Jingtian Du, Hongxia Wang, Kun Fang, Yanbo Zhu

Peer Reviewed

Abstract:	The integrity risk requirements proposed by the International Civil Aviation Organization (ICAO) for GNSS aviation applications in different operation stages are difficult to directly apply to a snapshot Advanced Receiver Autonomous Integrity Monitoring (ARAIM) user algorithm. To reduce the conservativeness introduced by the integrity risk mapping process, the paper proposes a method to allocate the integrity risk requirement over an operation exposure time and assess the availability. Strict definitions of ARAIM continuity risk and integrity risk over an operation exposure time are introduced. The functional relationship between the risk over the operational exposure period and the protection levels of each epoch is derived based on a first-order Gaussian Markov process. An availability assessment method for ARAIM with fault detection and exclusion (FDE) is proposed. The results of the performance simulation show that the proposed method can meet 99.9% RNP 0.1 global availability for three constellations.
Published in:	Proceedings of the 36th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2023) September 11 - 15, 2023 Hyatt Regency Denver Denver, Colorado
Pages:	1879 - 1889
Cite this article:	Du, Jingtian, Wang, Hongxia, Fang, Kun, Zhu, Yanbo, "Availability Assessment of ARAIM FDE with Time-Correlated Errors," Proceedings of the 36th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2023), Denver, Colorado, September 2023, pp. 1879-1889. https://doi.org/10.33012/2023.19304
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