Cui Linyan, Xue Bindang, Cao Xiaoguang
J Opt Soc Am A Opt Image Sci Vis. 2013 Sep 1;30(9):1738-45. doi: 10.1364/JOSAA.30.001738.
The turbulence effect models derived with the Rytov theory method cannot be applied in the analysis of moderate-to-strong non-Kolmogorov turbulence. In this work, new expressions of the temporal power spectra of irradiance fluctuations are derived theoretically for optical waves propagating through moderate-to-strong non-Kolmogorov turbulence. They are developed under Andrews' assumption that small-scale irradiance fluctuations are modulated by large-scale irradiance fluctuations of the optical wave. A wide range of turbulence strength is considered instead of a limited range for weak non-Kolmogorov turbulence. These expressions have general spectral power law values in the range 3 to 4 instead of the standard power law value of 11/3 for Kolmogorov turbulence. Calculations are performed to analyze turbulence strength and turbulence spectral power law's variations on the final expressions.
用里托夫理论方法推导的湍流效应模型不能应用于中等到强非柯尔莫哥洛夫湍流的分析。在这项工作中，理论上推导了光波在中等到强非柯尔莫哥洛夫湍流中传播时光照度起伏的时间功率谱的新表达式。这些表达式是在安德鲁斯的假设下推导出来的，即小尺度光强起伏受光波大尺度光强起伏调制。考虑了较宽范围的湍流强度，而不是弱非柯尔莫哥洛夫湍流的有限范围。这些表达式在3到4的范围内具有一般的谱幂律值，而不是柯尔莫哥洛夫湍流的标准幂律值11/3。进行了计算以分析湍流强度和湍流谱幂律对最终表达式的变化。
