一种低轨卫星载波相位差分定位方法
By selecting common-view satellites and establishing an EKF model for carrier phase differential positioning, the positioning error problem caused by the lack of orbital information of low-Earth orbit satellite signals was solved, thus improving the positioning accuracy of low-Earth orbit satellite navigation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- BEIJING AUTOMATION CONTROL EQUIP INST
- Filing Date
- 2023-12-27
- Publication Date
- 2026-07-17
AI Technical Summary
Low-Earth orbit satellite signals do not contain or cannot extract orbital information of the radiation source, resulting in inconsistencies in the spatiotemporal reference in the positioning system. Existing technologies cannot effectively eliminate positioning errors caused by reference bias, leading to insufficient positioning accuracy.
By acquiring observation data from the base station and rover, common-view satellites are screened, a reference satellite is selected, an extended Kalman filter (EKF) model is established, and carrier phase differential positioning is performed to reduce the common error between the base station and the rover.
It improves the accuracy of low-orbit satellite navigation and positioning, reduces the positioning error between the base station and the rover, and achieves higher positioning accuracy.
Smart Images
Figure CN117949989B_ABST