Optimum Antenna Design for DGPS Ground Reference Stations

Michael Braasch

Abstract:	The Global Positioning System (GPS) user community is growing exponentially. Although many of these users are content with the accuracy provided by the GPS Standard Positioning Service (SPS), an increasing number of applications require the precision provided tither by code-differential or carrier-differential techniques. An example is precision approach and landing. All candidate precision approach architectures involve the use of differential processing schemes. Multipath has been well-established as the primary error source in DGPS, yet most current antenna designs do not address this fact. This paper discusses the state of the art in GPS antenna design and analyzes antenna performance for the case of DGPS ground reference stations. This serves as the background for the design of an optimum ground reference station antenna system. The optimizing criteria is multipath rejection and this is achieved through the use of multiple antenna types and phased-array design.
Published in:	Proceedings of the 7th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1994) September 20 - 23, 1994 Salt Palace Convention Center Salt Lake City, UT
Pages:	1291 - 1297
Cite this article:	Braasch, Michael, "Optimum Antenna Design for DGPS Ground Reference Stations," Proceedings of the 7th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1994), Salt Lake City, UT, September 1994, pp. 1291-1297.
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