针对近地面来袭的激光威胁源, 建立基于米氏散射理论的散射探测模型。利用matlab软件对散射光光强随激光探测方向、大气能见度的变化进行了数值分析, 结果表明, 探测散射光最强的方向是平行于主轴传输方向, 大气能见度和散射光强成非线性关系。在分析散射光强受气象条件变化的基础上, 得到了不同激光威胁源情况下, 激光告警的最大散射截获距离。

The scattering detection model is built for the threatening source of lasers from the ground according to Mie scattering theory. By using the software of matlab, the scattering light intensity which is influenced by the orientation of detection and the atmosphere visibility is analysed numerically. As a result, the maximum intensity is parallel to the propagation direction of laser, and the atmospheric visibility is nonlinear to the intensity. By discussing the relationship between the scattering light intensity and the atmospheric visibility, the maximum scattering interception range is obtained for varied threatening source of lasers.