以修正Rytov 方法为基础，利用部分相干高斯-谢尔(GSM)光束模型并结合Andrews 的唯像闪烁模型，研究部分相干光在大气湍流中的光强闪烁效应。推导出适用于不同湍流情形的部分相干光对数光强起伏方差表达式，系统分析了部分相干光在大气湍流中的光强起伏方差。结果表明：在同等的湍流环境下，部分相干光比完全相干光的光强起伏方差要小；光束相干性越差，光强起伏越小，抗湍流能力越强。在不同大气湍流情形下，光源相干性、大气折射率常数等参数对光强起伏都有不同程度的影响。

Based on the modified Rytov variance, the effect of partially coherent beam through atmospheric turbulence on log-intensity variance is studied using the Gaussian-Schell model (GSM) beam and Andrews model. The log-intensity variance is deduced and discussed when partially coherent beam goes through weak turbulence and strong turbulence. The results show that the log-intensity variance of the partially coherent beam is lower than that of the fully coherent beam under the same turbulence conditions, as the light source coherence becomes worse, the log-intensity variance and the influence of turbulence plane decreases. The light source coherence, atmospheric refractive index structure constant and other parameters all have great effect on scintillation in both of weak and strong turbulence.