Integrated real-time precise point positioning system with B2b/B2a/B1C services

作者：Zhetao Zhang, Hao Wang, Yuanxi Yang · 发表于：Satellite Navigation · 年份：2025 · DOI：10.1186/s43020-025-00172-x · 被引用次数：14 · 研究领域：GNSS positioning and interference、Inertial Sensor and Navigation、Geophysics and Gravity Measurements

Abstract Real-Time Precise Point Positioning (RTPPP) technology is one of the most important means of positioning and navigation, whereas this type of service requires Internet access. As an alternative, satellite-based RTPPP can be utilized, especially for the PPP-B2b service of the BeiDou Navigation Satellite System (BDS). However, there is no systematic study on how to fully employ all satellite-based augmented services such as B2b, B2a, and B1C services in BDS. To ensure the continuity and availability of the PPP-B2b service, an Integrated Real-Time PPP (InRPPP) system is proposed which consists of B2b, B2a, B1C, and broadcast ephemeris messages. Specifically, the satellite orbit and clock errors are corrected by the B2b and B2a services, and the ionospheric delays by the B1C services. That is, the B2b, B2a, B1C, and broadcast ephemeris messages are resiliently utilized in the InRPPP system. Both static and kinematic experiments under complex conditions are carried out. The results indicate that compared to the PPP based on B2b, B2a, or B1C services, the InRPPP system performs the best in terms of visible satellite numbers and Position Dilution of Precision (PDOP) values. Also, in the static experiment, the InRPPP mode achieves the highest accuracy and the shortest convergence time compared to the PPP based on B2b, B2a, or B1C services. The Three-Dimensional (3D) Root-Mean-Square (RMS) value of the InRPPP mode is 0.49 m, improving 59.6% on average. For the convergence tim...