摘要
针对白天强背景条件下自适应光学系统哈特曼传感器信背比低、波前探测精度不高等问题,利用人造目标与强背景偏振特性差异,提出基于偏振调制的哈特曼波前探测方法,将传统的哈特曼波前探测从强度维度转换到偏振维度,有效提升信背比和波前探测精度。阐述了偏振哈特曼波前探测基本方法和原理,并通过数值模拟仿真验证了方法的正确性和准确性。研究结果表明:偏振哈特曼探测技术能够有效提升强背景条件下信背比和波前探测精度,显著增强自适应光学系统在强背景条件下的工作能力。
Aiming at the problems of low signal-to-background ratio and low wavefront detection accuracy of the adaptive optical system Hartmann sensor under strong background conditions during the day,based on the differ-ence in polarization characteristics between man-made targets and strong backgrounds,a polarized Hartmann wa-vefront detection technology is proposed.The traditional Hartmann wavefront detection is converted from the intensity dimension to the polarization dimension,thereby effectively improving the signal-to-background ratio and wavefront detection accuracy.The basic methods and principles of polarized Hartmann wavefront detection are described,and the correctness and accuracy of the method are verified through numerical simulations and experi-ments.Theoretical and numerical simulation results show that the polarized Hartmann wavefront detection tech-nology can effectively improve the signal-to-background ratio and wavefront detection accuracy under strong back-ground conditions,and significantly enhance the ability of the adaptive optical system to work under strong back-ground conditions.
作者
郭庭
张彬
顾乃庭
饶长辉
黄林海
许多
肖亚维
Guo Ting;Zhang Bin;Gu Naiting;Rao Changhui;Huang Linhai;Xu Duo;Xiao Yawei(Sichuan University,School of Electronic Information,Chengdu,Sichuan 610064,China;Key Laboratory of Adaptive Optics,Chinese Academy of Sciences,Chengdu,Sichuan 610209,China;Institute of Optics and Electronics,Chinese Academy of Sciences,Chengdu,Sichuan 610209,China)
出处
《光电工程》
CAS
CSCD
北大核心
2021年第7期53-62,共10页
Opto-Electronic Engineering
基金
国家自然科学基金青年基金和优秀青年基金资助项目(61905252,12022308)
中国科学院青年创新促进会资助项目(2018412)。
关键词
自适应光学
强背景
偏振哈特曼传感器
偏振调制
adaptive optics
strong background
polarized Hartmann sensor
polarization modulation
