为了研究大气湍流对合成孔径激光雷达(SAL)成像的影响,基于Monte-Carlo随机因子,对满足Kolmogorov统计规律的大气湍流相位屏进行数值模拟,计算了不同湍流、不同波长情况下的机载SAL成像结果,数值分析了不同斜距、不同波长条件下合成孔径长度与大气相干长度比值随大气湍流强度的变化关系。结果表明大气湍流效应严重影响了SAL的方位向成像,随着湍流强度的增大,SAL图像散焦越来越严重,直至目标无法分辨。同一湍流强度下,光束波长越长,SAL成像效果越好。对于湍流效应造成的SAL图像失真,采用改进的秩一相位误差估计(IROPE)法对SAL图像进行补偿,当大气相干长度大于实孔径长度时,IROPE算法能够有效改善图像的聚焦效果,提升SAL成像分辨率。 In order to study the effect of atmospheric turbulence on synthetic aperture lidar (SAL) imaging, atmospheric turbulence phase screens satisfying the Kolmogorov statistical rule are numerically simulated based on the Monte-Carlo stochastic factor, and the effects of different turbulence, airborne SAL The relationship between the ratio of synthetic aperture length and atmospheric coherence length with the atmospheric turbulence intensity was analyzed numerically by the imaging results and the numerical analysis. The results show that the atmospheric turbulence effect seriously affects the azimuthal imaging of SAL. As the intensity of turbulence increases, the defocusing of SAL image becomes more and more serious until the target can not be resolved. The same turbulence intensity, the longer the wavelength of the light beam, the better the SAL imaging effect. For SAL image distortion caused by turbulence, IROPE method is used to compensate the SAL image. When the atmospheric coherence length is larger than the real aperture length, the IROPE algorithm can effectively improve the image focusing effect and enhance the SAL imaging Resolution.