非球形粒子密集分布中电磁波散射的蒙特卡罗模拟

遥感信息 Pub Date : 1997-08-03 DOI:10.1109/IGARSS.1997.615298

L. Tsang, K. Ding, S. Shih

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引用次数: 2

摘要

在密集、离散的随机介质中，波的传播和散射不仅受粒子的个体性质如大小、形状和介电常数的影响，而且受粒子的相对位置和相对方向统计量等群体性质的影响。在本文中，作者研究了电磁波与由随机或排列方向的球形粒子组成的致密介质的相互作用。提出了基于体积积分方程和矩量法的多次散射公式。一种洗牌过程被用于生成立方体盒子内密集排列的球体的位置。散射结果在许多实现中被平均。本文给出了消光率的数值结果，以说明非球形和球形粒子的极化散射特性和散射特性的差异。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Monte Carlo simulations of scattering of electromagnetic waves from dense distributions of nonspherical particles

In a dense, discrete random medium, the propagation and scattering of waves are not only affected by the individual properties of the particles such as sizes, shapes and permittivities, but also by the group properties such as the statistics of relative particle positions and relative orientations. In this paper, the authors investigate the interactions of electromagnetic waves with a dense medium consisting of spheroidal particles with random or aligned orientations. A multiple scattering formulation based on the volume integral equation and method of moments is developed. A shuffling process is used to generate the positions of densely packed spheroids within a cubic box. The scattering results are averaged over many realizations. Numerical results are presented for the extinction rates to illustrate the polarimetric scattering properties and the differences of scattering properties between nonspherical and spherical particles.

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来源期刊

遥感信息

自引率

0.00%

发文量

3984

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