【摘要】 影响大口径地基自适应光学望远镜成像的因素很多,为获得近衍射极限的高分辨力成像效果,需要对系统的关键参数进行优化。本文分析了影响地基光学望远镜成像的误差源,建立合理的误差评价模型。并利用仿真的方法对该模型进行了验证,并对湍流条件、望远镜口径、采样频率、变形镜驱动器间距、导星等关键参数进行了优化分析。与仿真结果对比表明:误差模型预测精度在较好的观测条件下能达到30nm以内。该模型也为自适应光学系统在生物显微成像、眼底成像、激光大气通信等领域的应用提供了参考。更多还原

【Abstract】 There are many factors that affect the imaging of large-aperture ground-based adaptive optics system.In order to obtain high-resolution imaging near the diffraction limit,it is necessary to optimize the key parameters of the adaptive optics system.This paper analyzes the error sources that affect the imaging of ground-based optical telescopes and establishes a reasonable error budget model.The simulation method was used to verify the model,and optimized analysis of key parameters such as turbulence conditions,telescope aperture,sampling frequency,deformable mirror driver spacing,and guide stars.Compared with emulation,the results show that the prediction accuracy of the error model can reach within 30 nm under better observation conditions.This model also provides a reference for the application of adaptive optics in the fields of biological microscopy imaging,fundus imaging,and laser atmospheric communication.更多还原