A comparative analysis of the accuracy attainable for the local monitoring of Earth’s surface movements and deformation using the GPS and GLONASS navigation satellite systems

Pleiades Publishing Ltd - 2017
V. I. Kaftan1,2,3, V. A. Sidorov4, A. V. Ustinov5
1Geophysical Center, Russian Academy of Sciences, Moscow, Russia
2Agrarian Technological Institute, Peoples’ Friendship University of Russia, Moscow, Russia
3Federal Center of Research in Geodesy, Cartography, and 3D Data Infrastructure, Moscow, Russia
4Center of Science and Production for Geological, Geophysical, and Ecologic–Geodynamic Research in Oil and Gas Fields, Atyrau, Republic of Kazakhstan
5Gidroproekt Institute, Moscow, Russia

Tóm tắt

This paper is concerned with an experiment that was intended to compare the respective accuracies of local GNSS monitoring using observations by GPS and GLONASS satellites at different elevations above the horizon. We used data from continuous daily observation sessions in a local network during 3 months in the “static” mode. An analysis of parameters that characterize the accuracy and efficiency of displacement determinations showed that the combined GPS + GLONASS data processing has the highest accuracy at elevation angles greater than 15°. It is shown that the accuracy of GLONASS observations is not considerably worse than that of GPS. We note that the time-dependent variation of GLONASS observation is large.

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