Rough-surface shadowing of self-affine random rough surfaces

被引：24

作者：

Parviainen, Hannu ^{[1
]}

Muinonen, Karri ^{[1
]}

机构：

[1] Univ Helsinki, FI-00014 Helsinki, Finland

来源：

JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER | 2007年 / 106卷 / 1-3期

基金：

芬兰科学院;

关键词：

light scattering; random rough surfaces; ray tracing; fractional Brownian motion; azimuthal shadowing effect; roughsurface shadowing;

D O I：

10.1016/j.jqsrt.2007.01.025

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Light scattering from self-affine homogeneous isotropic random rough surfaces is studied using the ray-optics approximation. Numerical methods are developed to accelerate the first-order scattering simulations from surfaces represented as single-connected single-valued random fields, and to store the results of the simulations into a numerical reflectance model. Horizon mapping and marching methods are developed to accelerate the simulation. Emphasis is given to the geometric shadowing and masking effects as a function of surface roughness, especially, to the azimuthal rough-surface shadowing effect. (c) 2007 Elsevier Ltd. All rights reserved.

引用

页码：398 / 416

页数：19

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