Title: Integrity Measures in Direct-positioning
Author(s): Pau Closas, Adrià Gusi-Amigó, Juan Blanch
Published in: Proceedings of the 30th International Technical Meeting of The Satellite Division of the Institute of Navigation (ION GNSS+ 2017)
September 25 - 29, 2017
Oregon Convention Center
Portland, Oregon
Pages: 2428 - 2435
Cite this article: Closas, Pau, Gusi-Amigó, Adrià, Blanch, Juan, "Integrity Measures in Direct-positioning," Proceedings of the 30th International Technical Meeting of The Satellite Division of the Institute of Navigation (ION GNSS+ 2017), Portland, Oregon, September 2017, pp. 2428-2435.
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Abstract: Direct Position Estimation (DPE) is a promising solution to enhance sensitivity and robustness of GNSS receivers. At a glance, it involves directly solving for the position, velocity, and time (PVT) without the intermediate steps of computing observables. This was seen, both theoretically and experimentally, to be outperform two-steps positioning in many challenging situations. On the other hand, signal integrity is a major concern in safety-critical applications and there is a need to investigate how integrity of DPE solution can be measured. This article discusses a possibility, leveraging on existing integrity algorithms for two-steps.