一种提高夏克-哈特曼波前传感器的动态范围的波前重构方法
By combining centroid search and global matching algorithms, the problem of high-precision reconstruction of Shaker-Hartmann wavefront sensors under large-amplitude wavefront distortion is solved, achieving dynamic range expansion and error avoidance, and is applicable to astronomy, adaptive optics and industrial inspection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHANGGUANG SATELLITE TECH CO LTD
- Filing Date
- 2025-07-31
- Publication Date
- 2026-07-17
AI Technical Summary
Existing Shaker-Hartmann wavefront sensors struggle to achieve high-precision and high-reliability wavefront reconstruction in scenarios with significant wavefront distortion. Furthermore, hardware adjustments increase system complexity, and algorithmic methods suffer from error accumulation issues.
The centroid search algorithm is used to obtain the absolute position of the spot centroid. The sub-pixel position of the centroid is calculated by combining matched filtering and Gaussian interpolation. The Kuhn-Munkres algorithm is used to establish the global matching relationship between the centroid and the sub-aperture. The wavefront is restored by Zernike polynomial, thus achieving highly reliable wavefront reconstruction.
Without increasing hardware complexity, it extends the dynamic range, achieves high-precision wavefront reconstruction, avoids error accumulation, and is suitable for astronomy, adaptive optics, and industrial inspection.
Smart Images
Figure CN120760870B_ABST