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《Acta Optica Sinica》 2014-02
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Numerical Research on Effect of the Size of the Target in Turbulence on the Residual Scintillation Index

Wang Liguo;Wu Zhensen;Wang Mingjun;School of Science,Xidian University;School of Physics and Electronic Engineering,Xianyang Normal College;  
Expression of the residual scintillation index of a received intensity from a rough target in atmospheric turbulence is derived by using the extended Huygens-Fresnel principle combined with the Rytov method.The formula is numerically evaluated in the cases of spherical wave and plane wave incidences,and the results agree with those obtained by the slip-step Fourier method,which proves the validity of the theory.The relationship between the residual scintillation index with the target size and the propagation distance is analyzed,which proves that the residual scintillation index is the scintillation index on the target plane averaged by the target aperture.
【Fund】: 国家自然科学基金(61172031 61271110);; 中央高校基本科研业务费专项资金(K5051207001)
【CateGory Index】: O357.5
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