折射率结构常数廓线模式讨论  

Refractive Index Structure Constant Profile and the Average Model

作　　者：翁宁泉[1] 肖黎明[1] 龚知本[1] 

机构地区：[1]中国科学院安徽光学精密机械研究所大气光学中心,安徽合肥230031

出　　处：《大气与环境光学学报》2007年第1期16-22,共7页Journal of Atmospheric and Environmental Optics

摘　　要：大气折射率结构常数随高度和时间变化较大,在研究光学湍流统计模式时,不同的统计方法对应统计模式的结果有一定的差别,这个差别会对模式的实际应用产生影响。从大气光学湍流的时空变化特征出发,得出大气光学湍流基本满足对数正态分布的结论,讨论了算术平均和对数平均在平均结果上的不同,研究了二者平均结果的关系,进一步研究了不同的平均方法对计算大气相于长度带来的影响。The structure constants of refractive index change with time and position. When the statistic model is educed from the experimental results, the average method will affect the model and its expression. The characteristic of optical turbulence is analyzed on the base of many radiosonde data. Results show that the structure constants vary according to logarithmic normal distribution. Both arithmetical and logarithmic methods are used to obtain the average profile. The results, from these two methods are compared, and the influence on the coherent length is also discussed.

关 键 词：大气湍流 廓线模式 统计方法 平均方法 

分 类 号：P401[天文地球—大气物理学与大气环境]