Performance Evaluation for Ground-Based Integrity Monitor Network

Yu-Fang Lai, Juan Blanch, Todd Walter

Peer Reviewed

Abstract:	In this paper, we address the issue of evaluating the performance of integrity monitors without pseudorange data. Specifically, we simulate the evolution of geometry with almanac data. It allows us to rapidly evaluate the error bounds of arbitrary numbers and locations of receiver networks. The error bounds of the PPP users are computed by solving steady-state Algebraic Riccati Equation of the Kalman filter. We also derived the information form of the satellite error at steady-state for the integrity monitor. Since the priors of the simulation is identical to the fault-tolerant filter with real data, the error bounds from the simulation produce the lower bound performance of the networks. In real data there are events such as cycle slips that would temporarily disrupt the estimations, which would degrade the performance. We compare the error bounds between the simulation and real data from a network of 56 reference stations to confirm the lower bound property of the simulated result. This work supports selecting and placing reference stations when designing monitor networks.
Published in:	Proceedings of the ION 2026 Pacific PNT Meeting April 13 - 16, 2026 Hilton Waikiki Beach Honolulu, Hawaii
Pages:	272 - 285
Cite this article:	Lai, Yu-Fang, Blanch, Juan, Walter, Todd, "Performance Evaluation for Ground-Based Integrity Monitor Network," Proceedings of the ION 2026 Pacific PNT Meeting, Honolulu, Hawaii, April 2026, pp. 272-285. https://doi.org/10.33012/2026.20608
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