| 改进的一维分形海面模型在分层海面电磁波透射问题中的应用 |
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| 引用本文： | 任新成,郭立新.改进的一维分形海面模型在分层海面电磁波透射问题中的应用[J].海洋通报,2009,28(2). |
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| 作者姓名： | 任新成 郭立新 |
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| 作者单位： | 1. 西安电子科技大学理学院,陕西,西安,710071;延安大学物理与电子信息学院,陕西,延安,716000
2. 西安电子科技大学理学院,陕西,西安,710071 |
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| 基金项目： | 国家自然科学基金，高等学校博士学科点专项科研基金 |
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| 摘 要： | 运用微扰法研究了平面波入射分层介质粗糙面的电磁波透射问题,采用改进的一维分形海面模型模拟实际的分层海面,推导出了平面波入射时的透射系数计算公式.通过数值计算得到了HH极化透射系数随散射角的变化曲线,讨论了中间介质介电常数和厚度、摩擦风速和入射波频率对透射系数的影响,得到改进的一维分形分层海面透射系数的基本特征、分区特征和随频率变化的特征,结果表明透射系数近似具有"量子化"特征.
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| 关 键 词： | 电磁波透射 微扰法 一维分形海面模型 分层海面 透射系数 |
Application of an Improved 1D Fractal Model for Electromagnetic Scattering from the Stratified Sea Surface |
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| REN Xincheng,GUO Lixin.Application of an Improved 1D Fractal Model for Electromagnetic Scattering from the Stratified Sea Surface[J].Marine Science Bulletin,2009,28(2). |
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| Authors: | REN Xincheng GUO Lixin |
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| Institution: | 1.School of Sciences;Xidian University;Xi'an 710071;Shanxi;China;2.College of Physics and Electronic Information;Yanan University;Yan'an 716000;China |
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| Abstract: | The electromagnetic scattering from the rough surface of layered medium with plane wave incidence is investigated and the formulae of the transmission coefficient from stratified sea surface with an improved 1D fractal model is derived by using the small perturbation method.The angular distribution of the transmission coefficient of HH polarization are obtained by numerical implementation,the influence of the permittivity and the mean layer thickness of intermediate medium,friction velocity and the frequenc... |
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| Keywords: | electromagnetic wave transmission the Small Perturbation Method 1D improved fractal sea surface model the stratified sea surface transmission coefficient |
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