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离轴激光对相机的干扰主要由激光衍射效应和散斑干涉效应引起。为此,分别建立了视场外激光衍射模型和激光散斑干涉模型,分析了不同参数条件下面阵空间相机接收的激光衍射图像和激光散斑图像,其中参数包括光束入射角、透镜口径、焦距以及F数。分析和比较了不同参数下两种干扰机制对空间相机的干扰影响。当激光垂直入射到空间相机时,激光衍射效应对相机的干扰占主导地位;当激光倾斜入射时,激光散斑干涉效应占主导地位。
Off-axis laser interference to the camera is mainly caused by laser diffraction and speckle interference effects. For this purpose, the field outside laser diffraction model and the laser speckle interference model are respectively established, and the laser diffraction images and laser speckle images received by the space array camera under different parameters are analyzed. The parameters include the incident angle of the light beam, the diameter of the lens, the focal length And F number. The influences of two kinds of interference mechanisms on the space camera under different parameters are analyzed and compared. When the laser beam is incident perpendicular to the space camera, the laser diffraction effect predominates on the camera. When the laser beam is incident obliquely, the laser speckle interference effect dominates.