线性体制星载激光雷达激光脚点平面位置检校方法及系统
By using a waveform parameter sequence matching method, the maximum amplitude position of adjacent laser feet is extracted and the difference is calculated, which solves the problem of low planar positioning accuracy of linear spaceborne lidar and achieves higher precision laser foot planar position calibration.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- WUHAN UNIV
- Filing Date
- 2022-12-26
- Publication Date
- 2026-07-17
AI Technical Summary
Existing linear spaceborne lidar suffers from platform vibration, temperature fluctuations, and atmospheric turbulence during on-orbit operation, which leads to laser pointing angle errors and reduces the planar positioning accuracy of laser footpoints. Existing calibration methods, such as the full waveform matching method, are greatly affected by noise and have limited applicability.
By employing a waveform parameter sequence matching method, the maximum amplitude positions of simulated echoes and recorded echoes near adjacent laser foot points are extracted, and the comprehensive difference between adjacent laser foot points is calculated, thereby achieving accurate calibration of the planar position of the laser foot points.
It improves the positioning accuracy of laser footpoints in planar positions, enhances terrain applicability, reduces the impact of noise interference on positioning, and improves calibration accuracy.
Smart Images
Figure CN115856845B_ABST