Modeling of GPS L1L2 Signal Propagationthrough the Ionosphere

John C. Anselmo

Abstract:	An accurate missile trajectory through the ionosphere requires a better understanding of the propagation of the GPS LlL2 signal propagation. Low Earth-Orbit (LEO) satellite experiments also requires a thorough analysis of this phenomenon if GPS receivers are on-board. GPS receivers negate ionospheric effects by compensating the LlL2 signal delay for signals received below the ionosphere. Several signal propagation models assume the ionosphere is a flat layer of constant thickness around the earth. Accurate ionospheric modeling requires an electron density profile representative of real world data. Modeling using electron density profiles, similar to a TEC distribution as a function of altitude and the effects on a GPS aided trajectory is in process.
Published in:	Proceedings of the 1994 National Technical Meeting of The Institute of Navigation January 24 - 26, 1994 Catamaran Resort Hotel San Diego, CA
Pages:	937 - 942
Cite this article:	Anselmo, John C., "Modeling of GPS L1L2 Signal Propagationthrough the Ionosphere," Proceedings of the 1994 National Technical Meeting of The Institute of Navigation, San Diego, CA, January 1994, pp. 937-942.
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