一种导航卫星实时钟差估计方法、系统和存储介质
By constructing a multi-source observation data model of ground stations and low-orbit satellites, and calculating and correcting pseudorange bias, the problem of accuracy degradation caused by pseudorange bias in joint space-ground data processing was solved, achieving high-precision estimation of real-time clock difference of navigation satellites and improving the performance of real-time precise positioning services.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SPACE STAR TECH CO LTD
- Filing Date
- 2025-05-22
- Publication Date
- 2026-07-17
AI Technical Summary
In joint space-ground data processing, pseudorange bias leads to a decrease in the accuracy of real-time clock difference estimation for navigation satellites, and existing technologies are unable to effectively eliminate this effect.
By constructing multi-source observation data models from ground stations and low-orbit satellites, the pseudorange bias value of the receiver is calculated and corrected. Combined with Kalman filtering, the navigation satellite clock bias is estimated in real time to eliminate the influence of pseudorange bias.
It improves the accuracy of real-time clock difference estimation for navigation satellites, resolves the adverse effects of pseudorange bias on estimation accuracy, and enhances the performance of real-time precise positioning services.
Smart Images
Figure CN120446987B_ABST