Achieving Decimetre Accuracy with Single Frequency Standalone GPS Positioning

Anh Quan Le

Abstract:	When Selective Availability was turned off in May 2000, the accuracy of standalone GPS positioning improved significantly. Next to it, with the availability of various public GPS related products including precise satellite orbits and clocks, and ionosphere maps, a single-frequency, standalone user can determine the position much more precisely. In this contribution, the most critical sources of error in single-frequency standalone positioning will be analysed and different approaches to mitigate the errors will be considered. The final approach will then be evaluated in a decently long static test with receivers located in different regions of the world and in a kinematic test with a small vessel. The ultimate results demonstrate an accuracy of 2-3 decimetres (standard deviation) for the horizontal position components and of 5 decimetres (standard deviation) for the vertical.
Published in:	Proceedings of the 17th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2004) September 21 - 24, 2004 Long Beach Convention Center Long Beach, CA
Pages:	1881 - 1892
Cite this article:	Le, Anh Quan, "Achieving Decimetre Accuracy with Single Frequency Standalone GPS Positioning," Proceedings of the 17th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2004), Long Beach, CA, September 2004, pp. 1881-1892.
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