基于波前传感器残差约束的成像光路静态像差检测方法  

Detection of Static Aberrations in Imaging Optical Path Considering Residual Constraints of Wavefront Sensor

作　　者：张赐宝 钟立波 饶长辉[1,2,3,4] Zhang Cibao;Zhong Libo;Rao Changhui(Key Laboratory on Adaptive Optics,Chinese Academy of Sciences,Chengdu 610209,Sichuan,China;Institute of Optics and Electronics,Chinese Academy of Sciences,Chengdu 610209,Sichuan,China;University of Chinese Academy of Sciences,Beijing 100049,China;School of Electronic,Electrical and Communication Engineering,University of Chinese Academy of Sciences,Beijing 100049,China;National Key Laboratory of Optical Field Manipulation Science and Technology,Chengdu 610209,Sichuan,China)

机构地区：[1]中国科学院自适应光学重点实验室,四川成都610209 [2]中国科学院光电技术研究所,四川成都610209 [3]中国科学院大学,北京100049 [4]中国科学院大学电子电气与通信工程学院,北京100049 [5]光场调控科学技术全国重点实验室,四川成都610209

出　　处：《激光与光电子学进展》2024年第14期101-113,共13页Laser & Optoelectronics Progress

基　　金：国家自然科学基金项目(11727805);中国科学院光电技术研究所前沿研究基金(C21K002);中国科学院青年创新促进会(NO.2022386)。

摘　　要：非共光路静态及准静态像差是限制大型地基天文望远镜高分辨力高对比度成像的关键因素,该静态像差不能被望远镜自适应光学(AO)系统波前传感器探测且严重影响成像性能。传统非共光路静态像差检测方法存在计算量大、复杂度高、迭代收敛慢、像差符号模糊性等问题。基于焦面畸变图像,建立了AO系统波前传感器残余像差约束的成像光路静态像差检测模型,开展了相关实验,使用随机并行梯度下降(SPGD)迭代算法对静态像差进行离线检测。实验结果表明,该方法在成像光路静态像差检测中的精度较高,且在不同噪声影响下的鲁棒性与稳定性较好。该研究结果为大型地基自适应光学望远镜成像光路静态像差检测提供了新思路,并为后续系统静态像差补偿与校正提供了理论依据与算法指导。Noncommon path static and quasistatic aberrations are key factors that limit highresolution and highcontrast imaging of large groundbased astronomical telescopes.These static aberrations cannot be detected by wavefront sensors in the adaptive optics(AO)systems of the telescopes and adversely affect imaging performance.Traditional methods for detecting noncommon path static aberrations exhibit drawbacks such as high computational complexity,slow iteration convergence,and ambiguity in aberration symbols.On the basis of focal plane distortion images,a static aberration detection model for imaging optical paths,considering the residual aberration constraints of the wavefront sensors in AO systems,was established.Experiments were conducted,wherein static aberrations were detected offline by using the stochastic parallel gradient descent(SPGD)iterative algorithm.The experimental results show that the proposed method exhibits high accuracy in static aberration detection of imaging optical paths,as well as good robustness and stability under different noise effects.Thus,a novel approach is proposed for detecting static aberrations in the imaging optical paths of large groundbased adaptive optical telescopes.The findings afford a theoretical basis and algorithm guidance for static aberration compensation and correction in AO systems.

关 键 词：自适应光学 非共光路静态像差检测 图像处理 随机并行梯度下降算法 

分 类 号：P111.2[天文地球—天文学] O438.2[机械工程—光学工程]