分析了海面边界层大气湍流温度脉动的统计特征,结果表明:虚温的功率谱是随时间而演变的,表现在其标度指数随时间变化;比较了不同统计时间下计算的大气折射率结构常数,并根据大气状态的实时变化提出了一种计算折射率结构常数的变间隔时间平均算法.%Characteristics of temperatures fluctuation measured at the maritime atmospheric surface layeris analyzed. The result is that the power spectrum of virtual temperature varies with time. Then refractive indexstructure constant evaluated with different average times are compared. In the end, an algorithm according tothe inherent state′s changing of the atmosphere is built to estimate refrective index structure constant.
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