Precise Point Positioning(PPP)technology based on BeiDou Navigation Satellite System-3(BDS-3)has wide application prospects in fields such as intelligent driving and smart transportation.However,there are currently few research and analysis on the dynamic positioning performance of Beidou-3 based on different PPP models based on different signal dual-frequency combinations.Therefore,this paper uses measured static and dynamic data from domestic receivers,analyzes the positioning performance of the BDS-3 dual-frequency signal combinations B1C/B2a,B1C/B3I,B1I/B2a and B2a/B3I based on the ionosphere-free combination model(IF)and the undifferenced and uncombined model(UDUC).Experimental results show:In static,simulated dynamic and dynamic data processing modes,the positioning performance of the two PPP models of the B1C/B2a combination is better than that of the other three dual-frequency signal combinations,and the positioning accuracy is improved by 7.5％compared with the other three combinations.Above,the maximum reaches 48.7％,and the convergence time is improved by more than 4.5％compared with the other three combinations,the maximum reaches 54.8％.In static,simulated dynamic and dynamic data processing modes,the PPP positioning performance of the four combinations of IF models is better than that of the UDUC model.For static,simulated dynamic and dynamic data processing,the average positioning accuracy of the four combinations of IF models is improved compared with that of the UDCU model by 25.9％,7.4％and 18.9％respectively,and the average convergence time is increased by 84.6％,61.5％and 4.9％respectively.
BDS-3precision single point positioningnon-differential and non-combinationionospheric combinationpositioning performance
万方数据
维普
