Integrity Monitoring of Carrier Phase Measurements using Particle Filtering

Eunsung Lee, Moon Beom Heo, Gi Wook Nam, Young Jae Lee

Abstract:	There are two kinds of measurements using GPS. One of them is carrier phase measurement, the other is pseudorange measurement. GPS carrier phase measurements give precise positioning performance. In this paper a method for detecting anomalies of GPS carrier phase measurements is described. The integrity is required to apply GPS to air navigations. For the stochastic systems, the conventional development of integrity monitoring schemes has relied on assumption the systems are linear and the noise and disturbances are Gaussian. But real noise and disturbances of GPS carrier phase measurements don’t have linear and Gaussian characteristics. State estimators for nonlinear system with non-Gaussian noise have more difficult problems and in general, the optimal solution cannot be expressed analytically. Recently developed Particle Filter (PF) overcomes some weak points of the linear state estimators. For applying PF to air navigations using GPS carrier phase measurements integrity methods are needed. In this paper a integrity monitoring method is developed to use GPS carrier phase measurements using PF. The method using PF affects only subsets of GPS carrier phase measurements have anomalies.
Published in:	Proceedings of the 21st International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2008) September 16 - 19, 2008 Savannah International Convention Center Savannah, GA
Pages:	1365 - 1370
Cite this article:	Lee, Eunsung, Heo, Moon Beom, Nam, Gi Wook, Lee, Young Jae, "Integrity Monitoring of Carrier Phase Measurements using Particle Filtering," Proceedings of the 21st International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2008), Savannah, GA, September 2008, pp. 1365-1370.
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