Clock Dynamics Analysis in IMM Filter for Carrier Phase Estimation Through Interference

Wengxiang Zhao, Samer Khanafseh, Boris Pervan

Abstract:	In this paper, we develop a dynamic model of receiver clock phase noise to enable Interactive Multiple Model (IMM) filters to maintain GPS carrier phase lock through broadband interference. Further, we extend the model to include the effects of vibration on clock phase noise. A covariance analysis is conducted to check our filter performance. Experimental validation results under normal and interference cases are provided. The clock dynamic model parameter sensitivity is analyzed to give some insight on the potential use of different types of clocks and to improve the robustness of the IMM filter.
Published in:	Proceedings of the 34th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2021) September 20 - 24, 2021 Union Station Hotel St. Louis, Missouri
Pages:	3322 - 3334
Cite this article:	Zhao, Wengxiang, Khanafseh, Samer, Pervan, Boris, "Clock Dynamics Analysis in IMM Filter for Carrier Phase Estimation Through Interference," Proceedings of the 34th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2021), St. Louis, Missouri, September 2021, pp. 3322-3334. https://doi.org/10.33012/2021.18024
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