Effect of GLONASS Orbit Error on Long Baseline GPS/GLONASS RTK

H. Yamada, T. Takasu, N. Kubo, A. Yasuda

Abstract:	Increased atmospheric delay and satellite orbit error dependent on baseline length affect the performance of long baseline RTK. Combined GPS and GLONASS is attractive to improve the satellite availability for RTK positioning. However, in practice, the quality of GLONASS broadcast ephemeris tends to be worse than that of GPS. The purpose of this paper is to evaluate the improvement of the positioning performance with near real-time combined GPS and GLONASS RTK in the long baseline. The error level of GLONASS broadcast ephemeris has been improved gradually, however currently still worse than that of GPS. The poor quality of GLONASS broadcast ephemeris degrades the positioning performance with combined GPS and GLONASS RTK in long baseline compared to RTK-GPS in near real-time. We showed the improvement of positioning performance with near real-time combined GPS and GLONASS RTK in long baseline using CODE’s ultra rapid product that is only GLONASS predict precise product available in realtime.
Published in:	Proceedings of the 22nd International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2009) September 22 - 25, 2009 Savannah International Convention Center Savannah, GA
Pages:	3290 - 3296
Cite this article:	Yamada, H., Takasu, T., Kubo, N., Yasuda, A., "Effect of GLONASS Orbit Error on Long Baseline GPS/GLONASS RTK," Proceedings of the 22nd International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2009), Savannah, GA, September 2009, pp. 3290-3296.
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