分析了合成孔径激光成像雷达(SAIL)受散斑效应影响的分辨单元成像过程并推导了含有散斑效应的二维数据收集方程。在此基础上通过数值模拟分析比较了不同接收天线尺寸、不同天线积分起点位置情况下散斑效应对成像所需的光电流交流项、距离向压缩和最终分辨单元成像结果的影响。结果表明散斑效应对分辨单元成像的影响主要体现在降低了分辨单元的图像强度，同时不同天线尺寸和天线积分位置对分辨单元的成像影响差异较大。分析结果可为今后SAIL散斑效应的抑制提供一定的参考。

Imaging process and the two-dimensional data collection influenced by space-time speckle effect for a resolution of the synthetic aperture imaging ladar (SAIL) are analyzed. Based on the previous research, the influences of the speckle effect introduced by different scopes and locations of the receiving antenna are compared. Correspondingly, the photocurrent, the compression in range direction and the final images of the resolution are simulated. Simulation results show that the image intensity of the resolution is significantly decreased, and the space-time varying speckle effects, introduced by different scopes and locations of the receiving antenna, exhibit remarkable different influences on the resolution imaging. Our research provides a certain reference for the reduction of the speckle effect in SAILs.