| 粗糙面上混杂非球形粒子层全极化散射数值模拟 |
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| 引用本文： | 徐丰,金亚秋.粗糙面上混杂非球形粒子层全极化散射数值模拟[J].微波学报,2005,21(6):1-7,22. |
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| 作者姓名： | 徐丰 金亚秋 |
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| 作者单位： | 复旦大学波散射与遥感信息教育部重点实验室,上海,200433 |
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| 基金项目： | 国家重点基础研究发展计划(973计划)，中国科学院资助项目 |
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| 摘 要： | 推导了随机取向有限细长圆柱的散射振幅函数,构造了粗糙面上非球形粒子层的矢量辐射传输方程的一阶Mueller矩阵解,包含了粗糙面面散射和粒子层体散射的五种散射机制.建立了粗糙面上混杂非球形粒子层的植被模型,其中垂直地面的有限长圆柱模拟树干,随机取向的有限细长圆柱模拟树枝,针状盘状粒子模拟针叶阔叶等.数值计算了粗糙面上混杂非球形粒子层的全极化散射,分析了各种散射机制的贡献,并与植被层散射的实验数据作了对比和分析.
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| 关 键 词： | 全极化测量 粗糙面 矢量辐射传输 |
| 文章编号： | 1005-6122（2005）06-0001-07 |
| 收稿时间： | 2004-09-06 |
| 修稿时间： | 2004-09-062004-12-21 |
Numerical Simulation of Fully Polarimetic Scattering from a Layer of Hybrid Non-spherical Particles above a Randomly Rough Surface |
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| XU Feng,JIN Ya-qiu.Numerical Simulation of Fully Polarimetic Scattering from a Layer of Hybrid Non-spherical Particles above a Randomly Rough Surface[J].Journal of Microwaves,2005,21(6):1-7,22. |
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| Authors: | XU Feng JIN Ya-qiu |
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| Affiliation: | Key Laboratory of Wave Scattering and Remote Sensing Information ( Ministry of Education |
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| Abstract: | The scattering amplitude function of a randomly oriented finite length cylinder is derived.The Mueller ma- trix approach of Vector Radiative Transfer(VRT)equation for a layer of random scatterers above a rough surface is devel- oped.We takes account of five scattering mechanisms for both volume and surface scattering.It is applied to a vegetation canopy model,where vertical cylinders are modeled for trunks,randomly oriented cylinders are modeled for branches,nee- dle-like or disk-like particles are modeled for broad or needle leaves.Fully polarimetric scattering from hybrid non-spherical particles by using the Mueller matrix solution are numerically calculated.And numerical results agree well with experimental data. |
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| Keywords: | Polarimetry Rough surface Vector radiative transfer |
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