利用闪烁和到达角起伏测量横向风速的对比研究

大气与环境光学学报 ›› 2017, Vol. 12 ›› Issue (4): 254-259.

利用闪烁和到达角起伏测量横向风速的对比研究

董婷1,2，吴毅1*，侯再红1，靖旭1，谭逢富1，何枫1

(1.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，合肥 230031；
2.中国科学院大学，北京 100049)

收稿日期:2016-01-27 修回日期:2016-03-15 出版日期:2017-07-28 发布日期:2017-07-19
通讯作者: 吴毅 (1960-)，男，安徽合肥人，研究员，博士生导师，主要从事激光大气传输、激光大气光学参数测量等方面的研究。 E-mail:wuyi@aiofm.ac.cn
作者简介:董婷 (1990-)，女，山东菏泽人，硕士研究生，主要从事激光大气探测方面的研究。
基金资助:
国家自然科学基金(41405014)资助

Comparison of Measure Path-Averaged Transverse Wind Speed from Scintillation and Angle-of-Arrival Fluctuations

DONG Ting1,2, WU Yi1*, HOU Zaihong1, JING Xu1, TAN Fengfu1, HE Feng1

(1. Key Laboratory of Atmospheric Composition and Optical Radiation, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, China;
2. University of Chinese Academy of Sciences, Beijing 100049, China)

Received:2016-01-27 Revised:2016-03-15 Published:2017-07-28 Online:2017-07-19
Supported by:
Supported by National Natural Science Foundation of China(41405014)

摘要/Abstract

摘要：

基于湍流冻结假说，利用时空相关函数分析了使用大气相干长度仪(DIMM)测量横向平均风速的原理，并通过闪烁和到达角起伏测量风速的路径权重函数确定风速传感器的安装位置。在弱湍流条件下，根据水平1 km传输实验测量的到达角起伏和光强起伏数据，分别计算横向风速并与风速传感器同时测量的参考风速对比，发现利用到达角起伏计算的风速与参考风速有一定的相关性。该实验拓展了大气相干长度仪的使用功能。

关键词: 闪烁, 到达角起伏, 相关法, 横向风速, 大气相干长度仪

Abstract:

Based on the frozen-flow hypothesis, the theory of measuring average transverse wind speed was analyzed by using space-time cross correlation function with atmospheric coherence length monitor (DIMM). The best location of meteorological sensor is determined by the path-weighted function of scintillation and angle-of-arrival (AOA) fluctuations. Under the weak turbulence condition, the transverse wind speed was calculated by data of scintillation and AOA fluctuations which was carried out in the experiment of 1km horizontal propagation path by DIMM. Some results were from the comparison between the transverse wind speed and the wind speed obtained by meteorological sensor. The wind speed obtained by AOA fluctuations is more coincident with wind speed acquired by meteorological sensor, and the correlation coefficient is 0.796. Otherwise, the correlation coefficients of wind speed obtained by scintillation and acquired by meteorological sensor is 0.579. The function of DIMM is expanded.

Key words: scintillation, angle-of-arrival fluctuations, correlation method, transverse wind speed, DIMM

中图分类号:

P427.1

董婷吴毅侯再红靖旭谭逢富何枫. 利用闪烁和到达角起伏测量横向风速的对比研究[J]. 大气与环境光学学报, 2017, 12(4): 254-259.

DONG Ting, WU Yi, HOU Zai-Hong, JING Xu, TAN Feng-Fu, HE Feng. Comparison of Measure Path-Averaged Transverse Wind Speed from Scintillation and Angle-of-Arrival Fluctuations[J]. Journal of Atmospheric and Environmental Optics, 2017, 12(4): 254-259.

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