Research on Real-time Precise Point Positioning Method Based on BDS-3 PPP-B2b Signals
A real-time PPP method based on the BDS-3 PPP-B2b service was investigated to address the problems of IGS precision products such as corresponding time delays and inconvenience in online downloading under long high-speed train operation.By obtaining real-time PPP-B2b precise products based on broadcast ephemeris and PPP-B2b cor-rection model,and by obtaining real-time kinematic/static PPP results based on PPP model and onlineambiguityresolu-tion method,this paper analyzed PPP-B2b orbit and clock offset correction magnitude and real-time PPP performance by using measured data.The 20-minute experimental results show that the northward positioning accuracy of real-time kine-matic PPP is 0.417 2 m with the eastward positioning accuracy of 0.304 1 m.The northward positioning accuracy of re-al-time static PPP is 0.100 5 m with the eastward positioning accuracy of 0.174 1 m.Real-time PPP based on PPP-B2b service has the advantage of timeliness,with static performance better than traditional PPP based on IGS precise prod-ucts,and kinematic performance comparable to it.
PPP-B2btrain positioningreal-timeprecise point positioning
万方数据
维普
