Evaluating the Application of PPP Techniques to ARAIM Using Flight Data

R. Eric Phelts, Kazuma Gunning, Juan Blanch, Todd Walter

Peer Reviewed

Abstract:	Traditional ARAIM solution separation techniques assume measurement errors are uncorrelated from one epoch to the next. They bound errors with relatively large sigmas to compute provably-safe protection levels. PPP-based techniques assume measurement errors have a degree of time correlation. These approaches leverage filtering and estimation to calibrate errors and reduce measurement uncertainty over time. This paper uses flight data to assess the ability of PPP-based solution separation techniques to provide integrity for ARAIM users during flight. It compares time-filtered protection levels to those computed using traditional “snapshot” approach. It is shown that PPP with integrity is capable of producing significantly smaller protection levels that also show improved robustness to aircraft dynamics.
Published in:	Proceedings of the 2020 International Technical Meeting of The Institute of Navigation January 21 - 24, 2020 Hyatt Regency Mission Bay San Diego, California
Pages:	379 - 385
Cite this article:	Phelts, R. Eric, Gunning, Kazuma, Blanch, Juan, Walter, Todd, "Evaluating the Application of PPP Techniques to ARAIM Using Flight Data," Proceedings of the 2020 International Technical Meeting of The Institute of Navigation, San Diego, California, January 2020, pp. 379-385. https://doi.org/10.33012/2020.17151
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