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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 study the principle and experimental technique of using laser active scanning to detect the incoming and outgoing azimuth of a long-range flying missile, taking the infrared point source seeker optical system as an example, the matrix optical tracking method was used to study the effects of “cat’s eye effect” The factors for quantitative analysis, and verified by experiments. The results show that the echo intensity is greatly affected by the angle of incidence of the scanning laser beam. The defocus, tilt and the relative aperture of the lens in the optical path of the seeker also affect the echo intensity.