High-Precision Real-Time Differential Positioning

Herbert Landau, Hans-Jurgen Euler

Abstract:	indicate a growing need for precise real-time positioning on land, on sea, in air and space (e.g. navigation of dredging vessels, automated aircraft landing, positioning of airborne sensors). Post-mission analyses of observations using the Global Positioning System have already shown the potential of the GPS system to deliver centimeter accuracies over baselines of several hundreds of kilometers. It is therefore a challenge to develop also a GPS navigation system with such a high accuracy level. The paper introduces a system based on six-channel low-cost C/A code receivers reaching accuracies in the centimeter range in real-time. The receivers are controlled by separate processors which are communicating via a radio link in the UHF band. The controllers are IBM compatible and are communicating with the receivers via serial interfaces. The system allows update rates of 1 Hz and the delay for the position fix is less than two seconds.
Published in:	Proceedings of the 4th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1991) September 11 - 13, 1991 Albuquerque, NM
Pages:	699 - 706
Cite this article:	Landau, Herbert, Euler, Hans-Jurgen, "High-Precision Real-Time Differential Positioning," Proceedings of the 4th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1991), Albuquerque, NM, September 1991, pp. 699-706.
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