Evaluation of Geodetic and Non-Geodetic GPS Receivers and Software in a Differential GPS Base Station Environment

Paul J. Hartzheim, Bryn A. Fosburgh, David F. Mezera

Abstract:	With the rapid advancement in Global Positioning System (GPS) technology several agencies are purchasing a variety of receivers to determine locations of features within 1-3 meters relative accuracy. Using a GPS receiver as a base station, several different remote receivers could be used, but it is uncertain whether receivers will be compatible and/or whether the accuracy can be achieved. Since the likelihood of purchasing the same receivers for both the base and remote sites is low and the probability of having a duplication of base stations is high, a coordinated effort is needed to efficiently implement base station technology. In Wisconsin, a GPS Base Station Task Force was formed to promote effective and efficient implementation of base station applications. The task force consisted of a Management and Technical Sub- committees. The Management Sub-committee addressed funding, operational responsibilities, liability issues and data archival. The Technical Sub-committee investigated receiver compatibility, accuracies, user friendliness and reliability of geodetic and non-geodetic GPS receivers. The Technical Sub-committee’s approach to ensure proper procurement and placement of base stations throughout Wisconsin was to: . Establish a temporary base station at the University of Wisconsin. . Collect GPS observational data over pre- determined locations. . Subsequently post-process the data using the remote manufacturer’s receiver software. . Analyze results and compile a final report. This paper will provide an overview of the field testing and data processing techniques: outline the capabilities of the receivers and accompanying software; describe problems encountered with the collection and post- processing of da& and illustrate comparisons between observed and known coordinate values.
Published in:	Proceedings of the 6th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1993) September 22 - 24, 1993 Salt Palace Convention Center Salt Lake City, UT
Pages:	1029 - 1038
Cite this article:	Hartzheim, Paul J., Fosburgh, Bryn A., Mezera, David F., "Evaluation of Geodetic and Non-Geodetic GPS Receivers and Software in a Differential GPS Base Station Environment," Proceedings of the 6th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1993), Salt Lake City, UT, September 1993, pp. 1029-1038.
Full Paper:	ION Members/Non-Members: 1 Download Credit Sign In