Open AccessExperimental investigation of open sea atmospheric optical turbulence
Author(s) -
Qian Wang,
Haiping Mei,
Yujian Li,
Shao Shi-Yong,
Xuebin Li,
Ruizhong Rao
Publication year - 2016
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.65.074206
Subject(s) - turbulence , scaling , physics , spectral density , atmospheric optics , optics , range (aeronautics) , scale (ratio) , computational physics , turbulence kinetic energy , remote sensing , meteorology , geology , geometry , materials science , statistics , mathematics , quantum mechanics , composite material
In this article, a high-quality fiber optical turbulence sensing array is arranged on the ocean-going instrumentation ship-Yuan Wang for 37 day continuous measurement. It is the first time that the spatial multipoint simultaneous measurement of maritime atmospheric optical turbulence has been realized. According to the measurement, the essential characteristics and quantitative data of the atmospheric optical turbulence on the open sea are obtained. Then the Greenwood spatial correlation function model is used for evaluating the outer scale of optical turbulence by a nonlinear fitting algorithm. Finally, the optical turbulence spectrum is divided into two sections, and the power spectrum scaling exponent is given by a section algorithm. Results show that the intensity of maritime atmospheric optical turbulence is a little smaller than that in the near ground layer and has no obvious diurnal variation characteristic. The value of outer scale is small and in a range of 0.2-0.3 m. It is easily found that the probability that the turbulence spectrum scaling exponent conforms to -5/3 is about 25% near the surface of open sea, which is smaller than that in the near ground layer.