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

Journal of Atmospheric and Environmental Optics ›› 2017, Vol. 12 ›› Issue (4): 254-259.

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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 Online:2017-07-28 Published:2017-07-19
Supported by:
Supported by National Natural Science Foundation of China(41405014)

Abstract

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

CLC Number:

P427.1

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

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