A Practical Technique for Assessing Multipath Mitigation Methods for DGPS Applications

James Stafford

Abstract:	Evaluation of recurring multipath in a static GPS re-ceiver’s pseudorange measurements is possible by ex-ploiting the repeatability of GPS orbits. Analysis using a calibration method originally introduced by Changdon Kee [1] derives multipath components by averaging se-quences of ionospherically corrected, code-carrier differ-ence data over common intervals of GPS satellite azimuth and elevation. This paper presents a modified approach that offers several practical improvements over the origi-nal method. The technique was developed and tested using data from an NSTB reference station. The results of this testing indicate that the method is effective and has practical application in the testing, installation, mainte-nance, and operation of a DGPS reference station.
Published in:	Proceedings of the 11th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1998) September 15 - 18, 1998 Nashville, TN
Pages:	1009 - 1016
Cite this article:	Stafford, James, "A Practical Technique for Assessing Multipath Mitigation Methods for DGPS Applications," Proceedings of the 11th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1998), Nashville, TN, September 1998, pp. 1009-1016.
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