一种矢量磁强计与星敏感器坐标系传递矩阵的在轨定标方法及系统
By employing spacecraft rotation maneuvers and singular value decomposition algorithms, high-precision alignment of the vector magnetometer and star sensor coordinate systems was achieved, solving the hardware dependency and accuracy issues in existing technologies. This method is suitable for efficient and reliable coordinate system transfer matrix estimation in deep space exploration missions.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- NAT SPACE SCI CENT CAS
- Filing Date
- 2025-10-10
- Publication Date
- 2026-07-17
AI Technical Summary
In existing technologies for deep space exploration missions, the alignment and calibration methods between the vector magnetometer and the star sensor coordinate system rely on additional hardware, which increases system complexity and cost, and makes it difficult to achieve high-precision attitude transfer matrix estimation in weak magnetic field environments.
By combining spacecraft rotational maneuvers with measurement data from vector magnetometers and star sensors, and using singular value decomposition algorithms to extract the rotation axis direction, a transfer matrix is constructed between the coordinate systems of the magnetometer and the star sensor, achieving high-precision alignment without additional hardware.
It reduces system complexity and cost, improves calibration robustness, is suitable for finite angle rotation and segmented processing, supports repeated execution in orbit, and is adapted to high-precision coordinate system alignment for deep space missions.
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Figure CN121048660B_ABST