文献类型：期刊文献

英文题名：Research on wavefront correction algorithm of Adaptive Optics system

作者：Li, Dongming.[1]; Gai, Mengye[1]; Chen, Haochuan[2]; Zhu, Guang[3]; Zhang, Lijuan[4]

机构：[1] School of Information Technology, Jilin Agriculture University, Changchun, China; [2] Law School, East China University of Science and Technology, Shanghai, China; [3] China Mobile Group, Jilin Company, Tonghua, China; [4] College of Computer Science and Engineering, Changchun University of Technology, China

年份：2015

起止页码：23

外文期刊名：Proceedings of 2015 4th International Conference on Computer Science and Network Technology, ICCSNT 2015

收录：EI(收录号：20163002647679)

语种：英文

外文关键词：Convolution - Search engines - Image reconstruction - Adaptive optics - Polynomials - Restoration

摘要：In order to obtain the wavefront phase distribution information of the Adaptive Optics (AO) system, the wavefront restoration algorithm based on the slope detection method in Hartmann-Shack Sensor was designed and developed in this paper. We used Zernike polynomial for pattern search method, and designed a structural experiment with AO system. Firstly, we use the combination of short exposure image and detection to achieve image convolution method. Secondly, we calculate the wavefront slope value of each sub aperture in X and Y direction, and then establish the coefficients relationship with Zernike polynomial. The calculation shows that the proposed method in this paper can effectively obtain wavefront phase expansion in Circular domain, and can calculate control signal, so the proposed method made the AO system closed-loop operation. The experiment result shows that the algorithm can effectively measure the wavefront phase distortion information, improve the correction capability of AO system. After wavefront restoration, it makes the image energy more focused, and the corrected wavefront Strehl Ratio SR/λ is 0.269, when the incident wavelength λ=633.6nm. ? 2015 IEEE.