Time reversal effects in random scattering media on superresolution, shower curtain effects, and backscattering enhancement
Time reversal effects in random scattering media on superresolution, shower curtain effects, and backscattering enhancement
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随机散射介质中的时间反转效应对超分辨率、浴帘效应和后向散射增强的影响
DOI：
10.1029/2007rs003645
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发表时间：
2007
期刊：
影响因子：
1.6
通讯作者：
Y. Kuga
中科院分区：
文献类型：
--
作者：
A. Ishimaru;S. Jaruwatanadilok;Y. Kuga
本文给出了由随机介质中随机绿色函数的二阶和四阶矩得到的时间反演脉冲的一阶和二阶矩的解析理论。这些理论基于抛物近似、双频互相关函数和圆形复高斯假设的使用。讨论了超分辨、相干长度、后向散射增强、光学厚度依赖性、浴帘效应和带宽等效应。
In this paper, we present analytical theories of the first and second moments of the time‐reversed pulse which are obtained by the second‐ and the fourth‐order moments of stochastic Green's functions in random media. The theories are based on the use of parabolic approximations, two‐frequency mutual coherence function, and the circular complex Gaussian assumptions. Several effects are discussed including the superresolution, the coherence length, backscattering enhancement, the dependence on the optical depth, the shower curtain effect, and the bandwidth.