Real-Time Differential Global Positioning System (DGPS) Data Link Alternatives

Carl A. Lanigan, Keith Pflieger and Per K. Enge

Abstract:	This paper describes real-time data broadcast systems for the transmission of differential GPS (DGPS) data to mobile users. It considers broadcast systems for meter level DGPS, which require data rates of 50 to 100 bits per second; and it considers broadcast systems for decimeter level DGPS, which require 1000 to 2000 bits per second. The study requires that the mobile terminals be small-commensurate with operation on a 16-foot skiff. It considers broadcast systems of the following types: low- and medium-frequency groundwave systems; high-frequency skywave systems; very high- and ultra high-frequency systems; and satellite systems. It characterizes these systems on the basis of coverage, time delay, the amount of development required by USAETL, cost, and the number of additional field personnel required. Finally, the paper discusses multiple reference station systems.
Published in:	Proceedings of the 3rd International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1990) September 19 - 21, 1990 The Broadmoor Hotel Colorado Spring, CO
Pages:	599 - 606
Cite this article:	Lanigan, Carl A., Pflieger, Keith, Enge, Per K., "Real-Time Differential Global Positioning System (DGPS) Data Link Alternatives," Proceedings of the 3rd International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1990), Colorado Spring, CO, September 1990, pp. 599-606.
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