Frequency dependence of scattering and extinction of dense media based on three-dimensional simulations of Maxwell's equations with applications to snow

被引：25

作者：

Chen, CT ^{[1
]}

Tsang, L

Guo, JJ

Chang, ATC

Ding, KH

机构：

[1] Univ Washington, Dept Elect Engn, Seattle, WA 98195 USA

[2] City Univ Hong Kong, Dept Elect Engn, Hong Kong, Hong Kong, Peoples R China

[3] NASA, Goddard Space Flight Ctr, Hydrol Sci Branch, Greenbelt, MD 20771 USA

[4] USAF, Res Lab, Sensors Directorate, SNHE, Hanscom AFB, MA 01731 USA

来源：

IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING | 2003年 / 41卷 / 08期

基金：

美国国家航空航天局;

关键词：

electromagnetic wave scattering; Monte Carlo method; passive microwave remote sensing;

D O I：

10.1109/TGRS.2003.811812

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

The frequency dependence of scattering by geophysical media at microwave frequencies is an important topic because multifrequency measurements are used in remote sensing applications. In this paper, we study rigorously the frequency dependence of scattering by dense media using Monte Carlo simulations of the three-dimensional solutions of Maxwell's equations. The particle positions are generated by deposition and bonding techniques. The extinction, scattering, and absorption properties of dense media are calculated for dense media of sticky and nonsticky particles. Numerical solutions of Maxwell's equations indicate that the frequency dependence of densely packed sticky small particles are much weaker than that of independent scattering. Numerical results are illustrated using parameters of snow in microwave remote sensing. Comparisons are made with extinction measurements as a function of frequency.

引用

页码：1844 / 1852

页数：9

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