Abstract:Galileo signal in space error and standard positioning performance analysis provides reference for use and the next construction. First, broadcast ephemeris orbital accuracy and clock accuracy, as well as URE, are analyzed by using precise orbit and clock file as reference. The results show the RMS of along-track error is less than 2 m, cross-track error is less than 1 m, radial error is less than 0.5 m, clock error is less than 3 ns, and the value of URE(1σ) is 0.82 m. Second, the Galileo satellite’s visibility and the value of PDOP are studied, and each part of UEE is calculated using the measured data. Finally, the standard positioning performance of the Galileo system is analyzed and its three-dimensional positioning accuracy (1σ) is found to be around 3.8 m-6.4 m.
LIU Zhaoying,CHEN Guo,HU Zhigang. Preliminary Analysis of Galileo Signal in Space Error and Standard Positioning Performance[J]. jgg, 2016, 36(4): 308-312.