The Data Processing Method and Precision Research of BDS/GPS Pseudorange Point Positioning

With the development of the BeiDou navigation satellite system(BDS),the calculating model of BDS,GPS pseudo-range single point positioning and BDS/GPS double system combined pseudo-range single were introduced in detail in order to study the difference between BDS and global positioning system(GPS)of the pseudo-range single point positioning,and the BDS,GPS system program was written respectively and BDS/GPS combined pseudo-range single point positioning program was wrote.The experiment data of Liaoning CORS station and Guangxi CORS station were adopted,the BDS/GPS double system was calculated,analysed and compared with results of single system BDS and GPS.The results show that BDS positioning accuracy is inferior to GPS positioning accuracy at Liaoning station,BDS positioning accuracy is the same as GPS positioning accuracy at Guangxi station.BDS/GPS double system is superior to single point positioning of BDS system in terms of the positioning accuracy.