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首页> 外文会议>International symposium on advanced optical manufacturing and testing technologies >Research of Centroiding Algorithms for Extended and Elongated Spot of Sodium Laser Guide Star
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Research of Centroiding Algorithms for Extended and Elongated Spot of Sodium Laser Guide Star

机译：钠激光导星的伸长和伸长点的质心算法研究。

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摘要

Laser guide stars (LGSs) increase the sky coverage of astronomical adaptive optics systems. But spot array obtained by Shack-Hartmann wave front sensors (WFSs) turns extended and elongated, due to the thickness and size limitation of sodium LGS, which affects the accuracy of the wave front reconstruction algorithm. In this paper, we compared three different centroiding algorithms , the center-of-gravity (CoG), weighted CoG (WCoG) and Intensity Weighted Centroid (IWC), as well as those accuracies for various extended and elongated spots, In addition, we compared the reconstructed image data from those three algorithms with theoretical results, and proved that WCoG and IWC are the best wave front reconstruction algorithms for extended and elongated spot among all the algorithms.
机译：激光导星（LGS）可以增加天文自适应光学系统的天空覆盖范围。但是，由于钠LGS的厚度和大小的限制，由Shack-Hartmann波前传感器（WFS）获得的点阵列会扩展和拉长，这会影响波前重建算法的准确性。在本文中，我们比较了三种不同的质心算法：重心（CoG），加权CoG（WCoG）和强度加权质心（IWC）以及各种扩展和扩展点的精度，此外，将这三种算法的重建图像数据与理论结果进行了比较，证明了WCoG和IWC是所有算法中扩展和拉长斑点的最佳波阵面重构算法。

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