SIMULATION OF WAVE-PROPAGATION IN 3-DIMENSIONAL RANDOM-MEDIA

被引：100

作者：

COLES, WA ^{[1
]}

FILICE, JP ^{[1
]}

FREHLICH, RG ^{[1
]}

YADLOWSKY, M ^{[1
]}

机构：

[1] UNIV COLORADO,COOPERAT INST RES ENVIRONM SCI,BOULDER,CO 80309

来源：

APPLIED OPTICS | 1995年 / 34卷 / 12期

关键词：

D O I：

10.1364/AO.34.002089

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Quantitative error analyses for the simulation of wave propagation in three-dimensional random media, when narrow angular scattering is assumed, are presented for plane-wave and spherical-wave geometry. This includes the errors that result from finite grid size, finite simulation dimensions, and the separation of the two-dimensional screens along the propagation direction. Simple error scalings are determined for power-law spectra of the random refractive indices of the media. The effects of a finite inner scale are also considered. The spatial spectra of the intensity errors are calculated and compared with the spatial spectra of intensity. The numerical requirements for a simulation of given accuracy are determined for realizations of the field. The numerical requirements for accurate estimation of higher moments of the field are less stringent.

引用

页码：2089 / 2101

页数：13

共 35 条

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