GPS Signal Propagation Mode Impact on Receiver Position Errors

Yu Morton, Robert Moore, Frank van Graas

Abstract:	GPS signals propagate through the ionosphere in two distinct modes due to the presence of the magnetic field: the ordinary mode and the extraordinary mode. These two modes correspond to different refractive indices. The differences in the refractive indices are manifested in the computation of the second order ionosphere error in GPS code and carrier phase measurements. The objectives of this paper are to clarify a misconception about the different modes of propagation and polarization of GPS signals and to analyze the impact of the different modes of propagation on GPS solutions at different geographical locations.
Published in:	Proceedings of the 2010 International Technical Meeting of The Institute of Navigation January 25 - 27, 2010 Catamaran Resort Hotel San Diego, CA
Pages:	426 - 432
Cite this article:	Morton, Yu, Moore, Robert, van Graas, Frank, "GPS Signal Propagation Mode Impact on Receiver Position Errors," Proceedings of the 2010 International Technical Meeting of The Institute of Navigation, San Diego, CA, January 2010, pp. 426-432.
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