梯度倾斜相关测量水平C_n~2和横向风速廓线的理论与仿真研究

发布时间：2018-06-05 07:35

本文选题：梯度倾斜 + 相关　；参考：《物理学报》2017年10期

【摘要】：根据Rytov近似以及泰勒湍流冻结假设,推导出以不同距离的前向散射光为信标的水平路径上梯度倾斜角的相关表达式.基于该表达式,在理论上提出了计算湍流强度与横向风速的新方法,并通过数值仿真对该方法进行了初步验证.结果表明,在5%高斯误差情况下,大气折射结构常数和风速的计算结果与理论真值在整体变化上具有较好的一致性,线性相关系数分别能达到0.8与0.9.该方法能够得到不同湍流与风速条件下的湍流强度廓线以及风速廓线,为反演大气湍流强度以及风速提供了一种新思路.
[Abstract]:According to the Rytov approximation and the Taylor turbulence freeze hypothesis, the correlation expression of gradient inclination angle on the horizontal path of the beacon with different distances is derived. Based on this expression, a new method for calculating the turbulent intensity and the transverse wind velocity is proposed in theory, and the results are preliminarily verified by the numerical simulation. The results show that in the case of 5% Gauss error, the calculation results of the atmospheric refraction structure constant and wind velocity are in good agreement with the theoretical true value, and the linear correlation coefficient can reach 0.8 and 0.9., respectively. The method can obtain the turbulence intensity profile and the wind velocity profile under different turbulence and wind speed conditions, in order to retrieve the strong turbulence intensity. A new way of thinking is provided for the degree and wind speed.
【作者单位】：中国科学技术大学环境科学与光电子技术学院;中国科学院安徽光学精密机械研究所中国科学院大气成分与光学重点实验室;
【基金】：国家自然科学基金(批准号:41405014)资助的课题~~
【分类号】：O357.5

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