分划板失调时猫眼系统的反射特性  

Reflection properties of cat-eye optical system with misaligned reticles

作　　者：张悦[1] 华文深[1] 周斌[1] 马左红[1] 李晓明[1] 邹效 

机构地区：[1]军械工程学院光学与电子工程系,石家庄050003 [2]总装重庆军事代表局驻重庆北培区军事代表室,重庆400700

出　　处：《强激光与粒子束》2012年第8期1816-1820,共5页High Power Laser and Particle Beams

摘　　要：为降低光电装备猫眼效应,减小光学窗口被激光主动侦察系统探测到的概率,对分划板失调情况下猫眼系统的反射特性进行了研究。基于几何光学与2维平面波角谱衍射理论,推导并仿真了平面波通过分划板失调猫眼系统在出射面上的衍射光场分布特性,实验验证了猫眼目标的反射特性。研究结果表明:分划板失调会导致猫眼系统出射面的回波光斑发生椭圆形变,而斜入射探测激光会使这一现象更加明显。利用这一特性对猫眼系统进行改进,会大大增加激光主动侦察系统区分形变猫眼目标和漫反射背景干扰的难度。Aiming at eliminating the cat-eye effect of electro-optical devices and decreasing the probability that optics windows are detected by active laser reconnaissance systems,reflection properties of the cat-eye optical system with misaligned reticles are investigated.Based on the geometrical optics and the theory of angular spectrum diffraction,the characteristics of diffraction light field distribution that plane waves pass through a cat-eye optical system are deduced and then simulated.The reflection properties of the cat-eye optical system are validated by experimental methods.It is found that the misalign of reticles leads to elliptical deformation of echo spots on output reference planes,and oblique incidence of laser beams makes this phenomenon more obvious.Making use of the reflection properties may increase the difficulty of distinguishing shape-changed targets and diffused background,so as to improve the viability of electro-optical devices on the warfare.

关 键 词：猫眼效应 激光主动侦察 分划板失调 椭圆度 

分 类 号：TN249[电子电信—物理电子学]