Effects of Equatorial Anomaly in the GPS Signals

A.B.V. Oliveira, T.N. de Morais, F. Walter

Abstract:	A program has been developed using Ionospheric Exchange format (IONEX) data to generate Vertical Total Electron Content (VTEC) animated maps. A mathematical ionospheric model based on these data was used in a 3D ray-tracing program. Different effects produced by the equatorial anomaly such as the bending of the rays, convergence and divergence are shown as function of the latitudinal and longitudinal gradients. A preliminary study showing correlation between position measurements and the effect of the anomaly is presented.
Published in:	Proceedings of the 16th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS/GNSS 2003) September 9 - 12, 2003 Oregon Convention Center Portland, OR
Pages:	1670 - 1682
Cite this article:	Oliveira, A.B.V., de Morais, T.N., Walter, F., "Effects of Equatorial Anomaly in the GPS Signals," Proceedings of the 16th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS/GNSS 2003), Portland, OR, September 2003, pp. 1670-1682.
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