Theory and application of wave propagation and scattering in random media
Theory and application of wave propagation and scattering in random media
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DOI：
10.1109/proc.1977.10612
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发表时间：
1977-07
影响因子：
20.6
通讯作者：
A. Ishimaru
中科院分区：
文献类型：
--
作者：
A. Ishimaru
本文综述了随机介质中波的传播和散射的基本理论和研究进展。随机介质的例子包括大气、海洋和生物介质，其特征在时间和空间上随机变化。近年来，在通信、探测和遥感领域，对这种介质中的电磁波、光波和声波的研究变得越来越重要。本论文的主题分为“随机分布散射体中的波”、“随机连续介质中的波”及“随机介质的遥感”。“讨论了具有各种近似解的传输理论和多重散射理论，并阐明了它们之间的关系。包括在分析中的强度，波动，脉冲传播和散射，相干带宽，通过随机介质的通信信道的相干时间的传播特性。遥感技术包括在使用反演技术处理不适定问题方面的最新进展。
This paper presents a review of basic theories and recent advances in the studies of wave propagation and scattering in random media. Examples of the random media include the atmosphere, the ocean, and biological media whose characteristics are randomly varying in time and space. The study of electromagnetic, optical, and acoustic waves in such media has become increasingly important in recent years in the areas of communication, detection, and remote-sensing. Topics covered in this paper are divided into "waves in randomly distributed scatterers," "waves in random continua," and "remote-sensing of random media." Transport theory with various approximate solutions and multiple scattering theories are discussed and their relationships are clarified. Included in the analyses are propagation characteristics of intensities, wave fluctuations, pulse propagation and scattering, coherence bandwidth, and coherence time of communication channels through random media. Remote-sensing techniques include recent advances in the use of inversion techniques to deal with ill-posed problems.