A Note on the Group Delay and Phase Advance Phenomenon Associated with GPS Signal Propagation through the Ionosphere

Jong-Hoon Won and Ja-Sung Lee

Peer Reviewed

Abstract: The propagation of a GPS signal through the ionosphere causes a group delay in the code signal and an advance of equal magnitude in the carrier signal. This paper explains this phenomenon by extending Jorgensen’s derivation for ionospheric effects on a carrier signal modulated by a single-frequency sinusoidal modulation. The explanation is based on an inverse Fourier transform model of the GPS signal at the GPS receiver antenna output and the expression for the delay of a single-frequency wave in the medium. It is much easier to understand than more common explanations in the literature that involve deriving group and phase velocities in the time – space domain.
Published in: NAVIGATION, Journal of the Institute of Navigation, Volume 52, Number 2
Pages: 95 - 98
Cite this article: Won, Jong-Hoon, Lee, Ja-Sung, "A Note on the Group Delay and Phase Advance Phenomenon Associated with GPS Signal Propagation through the Ionosphere", NAVIGATION, Journal of The Institute of Navigation, Vol. 52, No. 2, Summer 2005, pp. 95-98.
https://doi.org/10.1002/j.2161-4296.2005.tb01735.x
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