Abstract The clock offset datum of GPS system broadcast by PPP-B2b service changes with time, but BDS system has no such phenomenon. The clock offset datum change will cause the jump of ISB parameters and affect the selection of ISB time-varying model. Based on PPP-B2b service, we analyze the performance of white noise, random walk and constant models in dynamic and static positioning mode.The experimental results show that, in static mode, both the white noise and random walk models are superior to the constant model in terms of convergence time and positioning accuracy. In dynamic mode, the white noise model and random walk model with appropriate process noise do not show reconvergence. Compared with the constant model, the positioning accuracy in E, N and U directions is improved by 86.7%, 89.2% and 85.3%, respectively. Therefore, for PPP-B2b service, using white noise model or random walk model with appropriate process noise for multi-system real-time PPP can get better positioning performance.
JI Rui,WANG Min,LIU Changjian et al. Influence of Different ISB Models on PPP-B2b Multi-System Real-Time Positioning Performance[J]. jgg, 2023, 43(7): 745-749.
JI Rui,WANG Min,LIU Changjian et al. Influence of Different ISB Models on PPP-B2b Multi-System Real-Time Positioning Performance[J]. jgg, 2023, 43(7): 745-749.