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《Science of Surveying and Mapping》 2019-01
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Evaluation of signal in space accuracy for BeiDou navigation satellite system

MA Xiaping;LU Shangqiang;LI Qinzheng;CHEN Peng;Key Laboratory for Digital Land and Resources of Jiangxi Province,East China University of Technology;School of Geomatics,Xi'an University of Science and Technology;Xi'an Hua Di Surveying and Mapping Technology Company Limited;  
According to the fact that there is whether the accuracy and stability of signal in space is capable to meet user requirements,errors of broadcast ephemeris and orbital accuracy and SISRE were analyzed based on successive 100 days measured data and precise satellite orbit and clock products of GBM in 2016.The experimental results showed the RMSE of broadcast ephemeris error of IGSO and MEO satellites were better than 3.0 m,that were better than 5.0 mfor GEO satellites;orbital accuracy of broadcast ephemeris for MEO and IGSO satellites was superior to that of GEO,and the orbit error in the radial Ris best;the average SISRE of GEO satellites was better than 1.5 m,while for IGSO and MEO were better than 1 mand 0.5 m,respectively.This reflected that Signal in space of BDS satellites presented a good stability and increasing accuracy.
【Fund】: 东华理工大学江西省数字国土重点实验室项目(DLLJ201803);; 现代工程测量国家测绘地理信息局重点实验室项目(TJES1810);; 北斗开放实验室西安分实验室项目(201703)
【CateGory Index】: P228.4;TN967.1
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