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根据数值方法获得的在湍流大气中传播的激光束的长曝光光斑空间分布特征，确定了ＣＣＤ成像技术中的背景信号的大小，进而解决了光斑尺度的测量问题。从数值分析和实验测量两方面分析了被湍流大气退化的光斑的形变特征的描述方法，引入了对应于工程应用的高于一定阈值的最大光斑半径和占空比。最后根据数值计算的结果提出了湍流大气中光场的局域增强现象。
According to the spatial distribution characteristics of the long exposure spot of the laser beam propagating in the turbulent atmosphere obtained by the numerical method, the size of the background signal in the CCD imaging technology is determined and the problem of measuring the spot size is solved. The method of describing the deformation characteristics of the spot degraded by turbulent atmosphere is analyzed from the aspects of numerical analysis and experimental measurement. The maximum spot radius and duty cycle above a certain threshold are introduced correspondingly to engineering application. Finally, according to the result of numerical calculation, the local enhancement of the light field in the turbulent atmosphere is proposed.