CENTIMETER-LEVEL, REAL TIME KINEMATIC POSITIONING WITH GPS + GLONASS C/A RECEIVERS

Dmitry Kozlov and Michael Tkachenko

Peer Reviewed

Abstract: This paper describes the main features of a new algorithm developed for a real-time kinematic (RTK) engine to process GPS + GLONASS CIA-code and carrier phase differential data. The goal of the development was to implement the algorithm in low-cost receivers that are capable of tracking the signals of both constellations. The test results, also presented, show that combined RTK processing ensures very fast (often instant) on-the-fly (OTF) ambiguity resolution (AR) and centimeter kinematic accuracy for short baselines under an open sky. Under a partly blocked sky or in a severe environment (urban areas, deep mines, under trees) where GPS-only RTK often is not able to work, GPS + GLONASS RTK still ensures reliable decimeter- and often centimeter-level real-time accuracy. The data was collected using Ashtech GG24 receivers with the RTK option installed.
Published in: NAVIGATION, Journal of the Institute of Navigation, Volume 45, Number 2
Pages: 137 - 160
Cite this article: Kozlov, Dmitry, Tkachenko, Michael, "CENTIMETER-LEVEL, REAL TIME KINEMATIC POSITIONING WITH GPS + GLONASS C/A RECEIVERS", NAVIGATION, Journal of The Institute of Navigation, Vol. 45, No. 2, Summer 1998, pp. 137-160.
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