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大地测量与地球动力学 2011
ACCURACY ANALYSIS OF GLONASS SATELLITES BROADCAST EPHEMERIS
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Abstract:
On the basis of the characteristics of GLONASS satellites,the scheme for analyzing the error of GLONASS broadcast ephemeris was discussed.By comparing with IAC's precise ephemeris and clock products,the performance of GLONASS orbit and clock error in broadcast ephemeris for all healthy GLONASS satellites in a period of 2 weeks were analyzed.The results show that the RMS of radial orbit error of current GLONASS broadcast ephemeris is less than 1 meter,the tangential one is less than 6 meters and the normal o...