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我们系统地研究了激光在湍流大气中的光强起伏与光斑统计特征。对数光强起伏的概率密度分布在弱起伏传播条件下大都接近于正态分布，其偏斜度一般为负，陡峭度一般为正。用五线段拟合法确定对数光强起伏频谱的无标度区间的标度指数，该标度指数在一天中变化很大，大部分情况下与局地均匀各向同性湍流介质中的传播理论结果不符。在可靠地确定CCD背景信号的基础上，测量了湍流大气中的光斑，从数值运算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，引入了适合工程应用的的描述方法。
We systematically studied the laser in the turbulent atmosphere of light intensity fluctuations and spot statistical characteristics. The probability density distribution of logarithmic light intensity fluctuation is mostly close to the normal distribution under the condition of weak undulating propagation, the skewness is generally negative, and the steepness is generally positive. The scale index of the logarithmic scale of the logarithm of the light intensity undulation was determined by the five-line fitting method. The scale index changed greatly in one day. In most cases, the propagation theory in the local homogeneous isotropic turbulent medium The result does not match. Based on the reliable determination of the CCD background signal, the flare in the turbulent atmosphere was measured. The deformation characteristics of the spot degraded by the turbulent atmosphere were analyzed from both numerical and experimental measurements, and the description method suitable for engineering application was introduced.