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Using Scintillation Modulation Approximation Theory to Investigate Phase Fluctuations of Waves Propagation Through the Turbulent Atmosphere
Author(s): 
Pages: 31-35
Year: Issue:  1
Journal: OPTO-ELECTRONIC ENGINEERING

Keyword:  大气光学相位起伏大尺度相位起伏小尺度相位起伏Andrews调制近似;
Abstract: 针对Rytov近似下相位起伏的理论结果与实际情况不符的缺陷,本文提出用Andrews的调制近似理论来研究光波在湍流大气中传输的相位起伏.该方法根据能量守恒的原理,得到了闪烁调制的具体表达式,然后通过功率谱的替换,从闪烁方差得到了上行、下行和水平三种链路的相位起伏的表达式.结果表明,Andrews调制近似其实有很多具体的形式,对于每一种形式,其中的物理量都有不同的物理含义.与Rytov近似下的结果相比,本文的结果将适用于倾斜传输路径和存在闪烁的聚焦和饱和的情况.
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