Two Carrier Phase Based Approaches for Autonomous Fault Detection and Exclusion

Xiao-Wen Chang, Christopher C. Paige, and John Studenny

Abstract:	This paper presents two carrier phase based ap- proaches for receiver autonomous fault detection and exclusion integrity monitoring (FDE). Some models based on carrier phase measurements are established. Any typical snapshot FDE algorithm based on a linear model can be applied directly to the models. The first approach uses only measurements of con- secutive epochs. For a single difference measurement model, if 4 epochs are used, at least 6 satellites are required to detect a fault and 7 are required to identify the faulty satellite. The second approach combines the measurements of the current epoch and estimates of integer ambiguities and error covariances obtained from the positioning algorithm of Van Graas and Lee. This approach is more suitable for computing the horizontal protection levels. If single difference measurements are used, at least 5 satellites are required for fault detection and 6 are required for identification.
Published in:	Proceedings of the 13th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 2000) September 19 - 22, 2000 Salt Palace Convention Center Salt Lake City, UT
Pages:	1895 - 1905
Cite this article:	Chang, Xiao-Wen, Paige, Christopher C., Studenny, John, "Two Carrier Phase Based Approaches for Autonomous Fault Detection and Exclusion," Proceedings of the 13th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 2000), Salt Lake City, UT, September 2000, pp. 1895-1905.
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