Title: A New GNSS Integrity Monitoring Based on Channels Joint Characterization
Author(s): Christophe Charbonnieras, Jonathan Israel, François Vincent, Lionel Ries, Marion Aubault-Roudier, Franck Barbiero, Guillaume Carrie
Published in: Proceedings of IEEE/ION PLANS 2016
April 11 - 14, 2016
Hyatt Regency Hotel
Savannah, GA
Pages: 422 - 430
Cite this article: Charbonnieras, Christophe, Israel, Jonathan, Vincent, François, Ries, Lionel, Aubault-Roudier, Marion, Barbiero, Franck, Carrie, Guillaume, "A New GNSS Integrity Monitoring Based on Channels Joint Characterization," Proceedings of IEEE/ION PLANS 2016, Savannah, GA, April 2016, pp. 422-430.
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Abstract: Many GNSS (Global Navigation Satellites System) applications need high integrity performances. Receiver Autonomous Integrity Monitoring (RAIM), or similar method, is commonly used. Initially developed for aeronautics, RAIM techniques may not be fully adapted for terrestrial navigation, especially in urban environments. Those techniques use basically the pseudoranges to derive an integrity criterion. In this paper, we introduce a new integrity criterion based on the correlation quality of each channel. This quality assessment is computed from the correlation levels for each channel, all based on a single position and speed. Hence, as the so-called Direct Position Estimation (DPE), we exploit the joint behaviour of all channels to detect any incoherence at an upstream step of the processing. This Direct RAIM (D-RAIM) allows detecting possible integrity problems before it can be seen on a classical RAIM scheme that only exploits the outputs of each channel.