Zhiqiao Chang

TL;DR: In this article, the authors proposed a derivation approach to the satellite clock offsets and the geometric distances from TDMA dual one-way measurements without a loss of accuracy, where the derived clock offsets are used for time synchronization, and the derived geometry distances are used by the satellite for autonomous orbit determination.

TL;DR: In this article, the frequency stability, clock prediction accuracy and clock rate variation characteristics of the third generation of Beidou Satellite Navigation System (BDS3) experimental satellites were analyzed using the high-precision clock values obtained by satellite-ground and inter-satellite measurement and communication systems.

TL;DR: The results show that with TWSTFT clock observations, the accuracy of satellite clock prediction is higher than MPOD, and the BDS clock stability at the 103 s interval is approximately 10−12, which is similar to the GPS IIR.

TL;DR: Experimenting with real data, positioning accuracy is estimated with a 3GEO/4IGSO COMPASS constellation, resulting in 25% positioning accuracy improvement for dual- frequencies and 10% improvement for single-frequency users.

TL;DR: In this article, the performance of the onboard GPS and BDS-3 measurements is analyzed, and the potential of the GPS-3-based precise orbit determination (POD) for Tianping-1B is assessed.