A low earth orbit star attitude correction method and device based on star sensor anomaly detection
By constructing a full-process data quality control mechanism and a multi-coordinate system error compensation model, abnormal data from star sensors are eliminated and attitude correction errors are accurately calculated, thus solving the problems of accuracy and stability of low-orbit satellite attitude correction and achieving high-precision attitude correction results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- AEROSPACE INFORMATION RES INST CAS
- Filing Date
- 2026-05-22
- Publication Date
- 2026-07-17
AI Technical Summary
In the complex space environment, the attitude measurement data output by the star sensor of low-orbit satellites is easily interfered with, making it difficult to guarantee the accuracy and stability of attitude correction. Existing solutions lack effective anomaly detection and quality screening mechanisms, and the compensation for multi-coordinate system transformation errors is not complete.
A data quality control mechanism is constructed that integrates star map denoising, signal-to-noise ratio filtering, star map recognition and matching, confidence modeling, and gray-scale variance testing to eliminate abnormal data. In addition, multi-coordinate system error compensation is performed by combining high-precision Earth orientation parameters, and finally the attitude correction error is accurately attributed to the satellite line of sight direction.
It significantly improves the attitude measurement accuracy and correction response speed of low-Earth orbit satellites in complex space environments, achieving a three-dimensional orbit determination accuracy better than 7cm, and supporting high-precision application scenarios of low-Earth orbit satellites in navigation enhancement, remote sensing monitoring, and space-to-ground communication.
Smart Images
Figure CN122408832A_ABST