Positioning performance analysis on combined GPS/BDS precise point positioning

作者：Jing Xiong,Fei Han

摘要：Combining the observation data from five Multi-GNSS Experiment(MGEX)stations with the precise orbit and clock products from Global Positioning System(GPS)and BeiDou Navigation Satellite System(BDS),we studied the model of combined GPS/BDS precise point positioning,and then analyzed the convergence speed and short-time(6 h)positioning accuracy.The calculation results show that in static positioning,the average convergence time of GPS is about 50 min,and its horizontal accuracy is better than 2 cm while the vertical accuracy is better than 4 cm.The convergence speed of combined GPS/BDS is about 40 min,and its positioning accuracy is close to that of GPS.In kinematic positioning,the average convergence time of GPS is about 72 min,and its horizontal accuracy is better than 5 cm while the vertical accuracy is better than 12 cm.The average convergence time of GPS/BDS is about 57 min,and its horizontal accuracy is better than 3 cm while the vertical accuracy is better than 9 cm.Combined GPS/BDS has significantly improved the convergence speed,and its positioning accuracy is slightly than that of GPS.

发文机构：Key Laboratory of Earthquake Geodesy Wuhan Seismic Metrological Verification and Surveying Engineering Institute Co. Second Highway Investigation and Design Institute of Ministry of Communication of China

关键词：COMBINEDGPS/BDSPRECISEpointPOSITIONINGCONVERGENCEspeedPOSITIONINGaccuracy

分类号： P228.4[天文地球—大地测量学与测量工程][天文地球—测绘科学与技术]