Electromagnetic Wave Scattering By Random Discrete Scatterers and Rough Surfaces With Applications to Microwave Remote Sensing

随机离散散射体和粗糙表面的电磁波散射及其在微波遥感中的应用

• 批准号: 9423861
• 负责人: Leung Tsang
• 金额: $ 16.07万
• 依托单位: University of Washington
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-10-01 至 1999-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9423861&HistoricalAwards=false
• 关键词: Electromagnetic; Wave; Scattering; Random; Discrete

The proposed work includes basic studies of scattering theory of random discrete scatterers and rough surfaces with the emphasis on developing electromagnetic scattering models that are valid over a wide frequency range. Analytical and numerical approaches will be developed to study the following: 1. Scattering by dense media will be studied to examine effective scattering properties, backscattering enhancement and localization with applications to snow and ice terrain. The microstructures of snow and ice and their effects on scattering will be studied. 2. Scattering by conglomerations of discrete scatterers with clustering structures will be studied to examine collective scattering and absorption effects with applications to remote sensing of vegetation and forests. Electromagnetic scattering by realistic plant structures as grown by the Lindenmayer system will be studied. 3. Scattering by random rough surfaces and backscattering enhancement problems will be studied with applications to remote sensing of soils and oceans. Problems of multiple scales and multiple slopes as w ell as large incidence angles will be studied.

拟议的工作包括随机离散散射体和粗糙表面的散射理论的基础研究，重点是开发在宽频率范围内有效的电磁散射模型。 将开发分析和数值方法来研究以下内容：1。 将研究密集介质的散射，以检查有效的散射特性，后向散射增强和定位与冰雪地形的应用。 将研究雪和冰的微观结构及其对散射的影响。 2. 将研究具有群集结构的离散散射体的聚集体的散射，以检查集体散射和吸收效应，并将其应用于植被和森林的遥感。 将研究由Lindenmayer系统生长的真实植物结构的电磁散射。 3. 将研究随机粗糙表面的散射和后向散射增强问题，并将其应用于土壤和海洋遥感。 将研究多尺度、多斜率以及大入射角的问题。