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分别利用部分相干理论、以广义椭球波函数为基础的Ｋａｒｈｕｎｅｎ－Ｌｏｅ′ｖｅ展开和相干成像理论研究了弱湍流像差大气照明系统互强度函数传输特征和位于湍流介质中镜面物体成像规律。结果表明：仅当反射光束相干尺度（成像光束等效直径）小于成像孔径的尺度时才能改善湍流大气中两次成像的质量
Using Karhunen-Loe’ve expansion and coherent imaging theory based on generalized ellipsoidal wave function, the transmission characteristics of mutual intensity function of weak turbulence aberration atmospheric lighting system and the imaging laws of specular objects located in turbulent medium are respectively studied by using partial coherence theory. The results show that the quality of twice imaging in the turbulent atmosphere can be improved only when the coherent scale of the reflected beam (the equivalent diameter of the imaging beam) is smaller than the scale of the imaging aperture