激光漫反射板防护效果研究

Study on protection effect of laser diffuse reflector

为了科学地评估激光漫反射板在激光角度欺骗干扰过程中的防护效果,采用坐标转换的方法,将导引头接收到的指示激光和干扰激光的能量密度放在同一坐标系进行比较,并计算出制导空域干扰覆盖率,分析了漫反射板和目标的法线方向差异对防护效果的影响。结果表明,对于典型立方体型目标,当漫反射板的法线与目标垂直面的法线方位相同、俯仰相差在0°~60°范围时,该垂直面的制导空域干扰覆盖率为100%,仅当漫反射板的法线与目标顶部水平面的法线方向完全相同时,该面的制导空域干扰覆盖才为100%;要实现全面的防护,需要根据激光来袭方向和可能的被照射面,设置多个漫反射板进行针对的防护。此研究方法和结果对于激光漫反射板的合理布设和使用有一定参考价值。

In order to scientifically evaluate the protective effect of the laser diffuse reflector in the laser angle deception jamming process,the coordinate transformation method was used to compare the energy density of the indicating laser received by the seeker and the jamming laser in the same coordinate system and the jamming coverage rate of the guidance airspace was calculated,and then the influence of the difference of the normal direction of the diffuse reflection plate and the target on the protective effect was analyzed.The research shows that for a typical-cubic type target,when the normal of the diffuse reflector is the same azimuth as the normal of the vertical plane of the target,and the pitch difference is between 0°and 60°,the guidance airspace jamming coverage of the vertical plane is 100%.Only when the normal direction of the diffuse reflector is the same as the normal direction of the horizontal plane at the top of the target the guidance airspace jamming coverage of the plane is 100%.In order to achieve comprehensive protection,it is necessary to set up multiple diffuse reflectors for protection according to the direction of the laser attack and the possible irradiated surface.This research method and results have reference values for reasonable layout and use of laser diffuse reflector.