Inner- and outer-scale effects on the scintillation index of an optical wave propagating through moderate-to-strong non-Kolmogorov turbulence

被引：29

作者：

Yi, Xiang ^{[1
]}

Liu, Zengji ^{[1
]}

Yue, Peng ^{[1
]}

机构：

[1] Xidian Univ, State Key Lab Integrated Serv Networks, Xian 710071, Peoples R China

来源：

OPTICS EXPRESS | 2012年 / 20卷 / 04期

关键词：

LOG-AMPLITUDE VARIANCE; SPECTRAL MODEL; PERFORMANCE; TROPOSPHERE; SYSTEMS;

D O I：

10.1364/OE.20.004232

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

By use of the generalized von Karman spectrum model that features both inner scale and outer scale parameters for non-Kolmogorov turbulence and the extended Rytov method that incorporates a modified amplitude spatial-frequency filter function under strong-fluctuation conditions, theoretical expressions are developed for the scintillation index of a horizontally propagating plane wave and spherical wave that are valid under moderate-to-strong irradiance fluctuations. Numerical results show that the obtained expressions also compare well with previous results in weak-fluctuation regimes. Based on these general models, the impacts of finite inner and outer scales on the scintillation index of an optical wave are examined under various non-Kolmogorov fluctuation conditions. (C) 2012 Optical Society of America

引用

页码：4232 / 4247

页数：16

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