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。

The off-axis laser disturbance on the camera is mainly caused by the laser diffraction and laser speckle interference. The models of the laser diffraction and the laser speckle interference are built respectively. The image of laser diffraction and laser speckle on the camera are analyzed under different parameters conditions, including the angle of incidence of laser beam, the caliber of lens, and the focal length of lens and F number. The effects of disturbing the camera by the laser diffraction and laser speckle interference are analyzed and compared at different parameters. The laser diffraction effect on the camera is significant when the laser beams are vertical incident to the space camera. The laser speckle interference effect becomes the leading role when the laser beams are oblique incident to the space camera.