二维各向同性均匀随机介质中平面波的传播
首发时间:2008-01-31
摘要:讨论了二维各向同性均匀随机介质中平面波的传播及其局域性。假设二维随机介质具有各向同性窄带高斯谱,运用随机泛函理论给出了二维介质中随机平面驻波的解析近似解及其幅度和相位的定量统计特性。计算结果证实了波在随机介质中传播时的局域性。将二维介质中的平面波和柱面波的传播特性作了对比。数值结果模拟了二维随机介质场及平面驻波,并验证了本文结果的正确性。
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Propagation and localization of plane waves in two dimensional random plane medium
Abstract:Propagation and localization of plane waves in two-dimensional (2D) homogeneous and isotropic random medium is studied. The approximate stochastic solution of the plane wave and the propagation behaviors are obtained by means of stochastic functional approach. The results verify the phenomenon of localization of waves in random medium. The agreements between the theory and the computer simulations are shown to be satisfactory in spite of the approximate theoretical formulas.
Keywords: random medium, stochastic functional approach, plane wave, localization
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