Accuracy Considerations for GPS TSPI System Design

Carl Hoefener, Robert J. Van Wechel

Abstract:	GPS has become popular as a time and space-position information (TSPI) source on tracking ranges because it offers a potentially more accurate and more versatile tracking technique than radar. As GPS tends to be a complex navigation system, there are many potential error sources that must be considered. When using GPS for a range instrumentation tool, many of the potential error sources can be eliminated or minimized because it is being used in a confined preestablished area, and it can be utilized at selected predetermined times. All these factors can help in optimizing the accuracies obtained from a GPS system when utilized for TSPI on the ranges. For example, differential applications will minimize bias errors, inertial reference unit (IRU) aiding can be used in high dynamic vehicles and the use of pseudosatellites, or ground transmitters can be used to optimize the geometric dilution of precision. Each of the major GPS error sources is defined, and proposed methods of compensation are discussed. Expected accuracies for typical system configurations are presented.
Published in:	Proceedings of the International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1988) September 19 - 23, 1988 The Broadmoor Hotel Colorado Spring, CO
Pages:	329 - 332
Cite this article:	Hoefener, Carl, Van Wechel, Robert J., "Accuracy Considerations for GPS TSPI System Design," Proceedings of the International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1988), Colorado Spring, CO, September 1988, pp. 329-332.
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