Precise Positioning Using GPS/GLONASS Carrier Phase and Code Phase Observables

David Walsh, Stuart Riley, John Cooper, and Peter Daly

Abstract:	The aim of the work described in this paper is to examine the performance of differential positioning using both the GPS and GLONASS satellite systems. Two aspects of performance have been concentrated on, (i) satellite availability, and (ii) positioning accuracy. These aspects are analyzed in some demanding applications. The increased satellite availability when using both satellite systems is analyzed. The paper then describes precise differential positioning results which have been obtained using code and carrier phase observables from the 20 channel GPVGLONASS receiver developed at the University of Leeds. Differential performance on a static baseline using both GLONASS and GPS, GPS alone and GLONASS alone, is described. Differential GPSIGLONASS tests have also been performed using a land vehicle in urban and semi- urban areas. The results demonstrate the advantages of using both GPS and GLONASS systems for this application. The consequent increase in the number of visible satellites significantly increases the positioning capability in built up areas. The results also show the potential for using a 20 channel GPS/GLONASS receiver to take full advantage of the increased number of satellites. The paper also describes a flight test where en-route differential GPVGLONASS positioning was performed for a flight to the North Pole. The results show the satellite availability at very high latitudes and the positioning accuracy over very long distances.
Published in:	Proceedings of the 8th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1995) September 12 - 15, 1995 Palm Springs, CA
Pages:	499 - 506
Cite this article:	Walsh, David, Riley, Stuart, Cooper, John, Daly, Peter, "Precise Positioning Using GPS/GLONASS Carrier Phase and Code Phase Observables," Proceedings of the 8th International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GPS 1995), Palm Springs, CA, September 1995, pp. 499-506.
Full Paper:	ION Members/Non-Members: 1 Download Credit Sign In