Vehicle Navigation Using Differential GPS

Tom Hunter, Wojciech Kosmalski, Phan Truong

Abstract:	The Global Positioning System (GPS) that is currently being implemented by the DOD, will be the universal means for precise navigation well into the next decade. Within the next 12 to 14 months, maintaining the current satellite launch schedule, GPS will become the most reliable, global, navigation system available. With an overall accuracy of approximately twenty five meters (25) SEP, based upon governmental selective availability, GPS is well suited for most navigational applica­tions. As with any form of navigation, there are utilization problems, inherent errors, and physical restrictions, that need to be con­sidered when the navigation unit in question is operated. GPS. like any other means of navigation, has its own set of error sources that are unique to its implementation. The implementation of differential GPS, as presented in this paper, deals with a pro­cess whereby these errors can be minimized, if not eliminated, thus improving the over­all accuracy of GPS to a level of a few meters.
Published in:	Proceedings of the 2nd International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1989) September 27 - 29, 1989 The Broadmoor Hotel Colorado Spring, CO
Pages:	139 - 143
Cite this article:	Hunter, Tom, Kosmalski, Wojciech, Truong, Phan, "Vehicle Navigation Using Differential GPS," Proceedings of the 2nd International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1989), Colorado Spring, CO, September 1989, pp. 139-143.
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