为研究用激光主动扫描法侦察远方飞航导弹来袭方位的原理及实验技术，以红外点源导引头光学系统为例，运用矩阵光学追迹法对影响“猫眼效应”回波强度的因素作定量分析，并用实验进行验证。研究结果表明: 回波强度受扫描激光光束的入射角影响较大，导引头光路中摄像管靶面离焦、倾斜和光学镜头相对孔径等因素对回波强度也有一定影响。

In order to research the principle and experimental technique of the attack directions of cruise missiles detection based on"Cat's eye" effect, the factors that influence the intensity of the reflection wave were analyzed quantitatively with the method of raytracing and carries on the confirmation with the experiment. Research results show that the scanning laser light beam incidence angle,the relative aperture of optical lens, the incline and defocusing of reflection plane in infrared seeker optical system reduce theintensity of the "cat's eye" reflection.