探测激光入射角对猫眼效应反射特性的影响

光电装备的光学窗口对入射激光有较强的反射特性，即猫眼效应现象。为了研究利用猫眼效应来进行主动探测的适用条件，弄清探测激光入射角对猫眼效应反射特性的影响，建立了斜入射猫眼效应反射模型，分析并仿真了探测激光在目标系统处的入射角不同的情况下的后向反射激光特性，以及探测系统所能够接收的原路返回激光的远场能量分布情况。结果表明：对于特定的目标系统，猫眼效应现象只存在于一定的探测激光入射角范围之内，在此范围之内，猫眼效应反射特性与探测激光的入射角关系密切；基于猫眼效应的激光主动探测、定位等应用也是可行的。

Effect of incidence angle on reflecting characteristics of cat eye effect

The optics window of photoelectric equipment has strong reflecting characteristics for the incident laser beam, which is known as cat eye effect. In order to study the suitability of cat eye effect for active laser detection and analyse the effect of the incidence angle on reflected characteristics of cat eye effect, a perfect reflecting model of cat eye effect in the gradient circs was founded, then analysis and simulation of the back-reflected laser characteristics of cat eye effect were done with various incidence angle of the detecting laser at the target optical system. Moreover, the far field energy distribute characteristics of the return laser beam which could be received by the detecting system were gotten. The results show that cat eye effect only exist when the incidence angle o