Monitoring Measurement Noise Variance for High Integrity Navigation with Cycle Resolution

Samer Khanafseh and Boris Pervan

Abstract:	In this paper, a methodology is developed to ensure the integrity of high accuracy carrier phase navigation systems that require cycle resolution, given that the measurement noise characteristics might change under different environments. For demanding aviation applications such as autonomous shipboard landing or autonomous airborne refueling, accuracy and integrity of carrier phase positioning and cycle resolution are essential. In such applications, the estimate error covariance matrix is used to assess the quality of cycle resolution as well as the integrity risk of the subsequent position solution. Therefore, any changes in the noise characteristics must be properly accounted for in the integrity risk computation. In this work, a monitor that detects sudden increases in the noise variance is proposed along with an explicit quantification of its effect on integrity risk.
Published in:	Proceedings of the 25th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2012) September 17 - 21, 2012 Nashville Convention Center, Nashville, Tennessee Nashville, TN
Pages:	242 - 249
Cite this article:	Khanafseh, Samer, Pervan, Boris, "Monitoring Measurement Noise Variance for High Integrity Navigation with Cycle Resolution," Proceedings of the 25th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2012), Nashville, TN, September 2012, pp. 242-249.
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