Continuity and Availability Evaluation in Horizontal ARAIM

Mathieu Joerger, Danielle Racelis, Juan Blanch, Boris Pervan

Abstract: In this paper, we describe methods to account for loss of continuity (LOC) caused by receiver alerts and unusually high protection levels caused by satellite outages in Horizontal Advance Receiver Autonomous Integrity Monitoring (H-ARAIM). First, we derive receiver alert thresholds to limit the risk of LOC: the derivation starts from the definition of LOC and shows that detection and exclusion thresholds do not require separate continuity risk requirement allocations. Second, we develop a new computationally-efficient approach to account for the impact of outages on LOC, which is key for performance analyses under the assumption that H-ARAIM does not require pre-flight availability screening. Both of these contributions are implemented to predict worldwide integrity and continuity performance in the presence of satellite faults and outages.
Published in: Proceedings of the 34th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2021)
September 20 - 24, 2021
Union Station Hotel
St. Louis, Missouri
Pages: 278 - 289
Cite this article: Joerger, Mathieu, Racelis, Danielle, Blanch, Juan, Pervan, Boris, "Continuity and Availability Evaluation in Horizontal ARAIM," Proceedings of the 34th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2021), St. Louis, Missouri, September 2021, pp. 278-289. https://doi.org/10.33012/2021.17963
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