基于合作目标卫星甚短弧观测的仅测角光学组合导航方法
By combining an inertial measurement unit and a star sensor, an improved integrated navigation method has been developed, which solves the problems of observation discontinuity and lack of attitude information in low Earth orbit autonomous navigation using only angle measurement optical sensors. This method achieves high-precision navigation parameter correction and is suitable for high-dynamic environments.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- BEIJING INST OF TECH
- Filing Date
- 2023-03-02
- Publication Date
- 2026-07-17
AI Technical Summary
Existing angle-measuring-only optical autonomous navigation methods suffer from problems such as unobservable observation distance, small field of view, low data update rate, discontinuous observation, and lack of attitude information in relative navigation between a carrier and a target satellite in low Earth orbit, making them difficult to adapt to highly dynamic environments.
By combining an inertial measurement unit (IMU) and a star sensor, an improved integrated navigation system is established. Using high-frequency data from the IMU and observation data from the star sensor, Kalman filtering correction is performed to obtain high-precision information on the relative motion state between the carrier and the cooperative target satellite.
It achieves high-precision correction of all navigation parameters of the inertial navigation system, including position, velocity, and attitude, in a very short time. It is suitable for the high dynamic environment of near-Earth space and has the advantages of low cost, low latency, and high stealth.
Smart Images
Figure CN116105730B_ABST