利用光学系统优化抑制气动光学激波效应

在大气中超音速飞行的物体的光学头罩与大气之间发生剧烈的相互作用，对光的传输造成影响，这种影响叫做气动光学效应。激波效应是物体与大气相互作用之后最先形成的气动光学效应，激波会使光学系统产生离焦，光学传递函数产生畸变，进而图像质量下降。本文利用采取对称波前编码技术搭建的全焦距信息光学成像系统对目标进行成像仿真，将光学系统传递函数进行优化，一定程度上实现了抑制激波效应对图像带来的影响，并对其进行了简要分析与讨论。

Study on an optimization of optical systems suppressing the shock wave effects

Air currents and optical mask of the supersonic flying object interact intensively in the atmosphere,which affects the transmit of the light,and it is called Aero-optical effects.Shock wave effect is the aero-optical effect formed first after the interaction between the object and the atmosphere.The shock wave makes the optical system defocused,the optical transfer function distorted,and makes the quality of the images decreased.This thesis makes use of the full focus optical image system which is constructed by the symmetrical wavefront coding technology to imitate the virtual image of the object.And we try to analyze and discuss how to make the optical transfer function better to restrain the effects of the defocusing optical shock wave.