Statistical Analysis of Different RAIM Schemes

Igor Nikiforov and Benoît Roturier

Abstract:	The aim of this paper is to analyze and to compare different methods of the Receiver Autonomous Integrity Monitoring (RAIM). The principal limitation of the conventional "snapshot" RAIM is its availability. This problem becomes especially important when the RAIM has to be used to provide integrity for the vertical positioning information. In this paper, we first define a statistical model of the position failure detection and exclusion based on RTCA high level definitions. This model provides us with a mathematically formalized description of different events which is important for further RAIM’s algorithm design and optimization. In a second step we analyse and compare the performance of several possible failure detection/exclusion solutions including the classical snapshot RAIM and the new proposed sequential algorithms. It is shown that these sequential algorithms can give better availability performance than currently used snapshot methods.
Published in:	Proceedings of the 15th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 2002) September 24 - 27, 2002 Oregon Convention Center Portland, OR
Pages:	1881 - 1892
Cite this article:	Nikiforov, Igor, Roturier, Benoît, "Statistical Analysis of Different RAIM Schemes," Proceedings of the 15th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 2002), Portland, OR, September 2002, pp. 1881-1892.
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