| 基于二阶散射的海面三尺度雷达后向散射模型 |
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| 引用本文： | 余颖,王小青,朱敏慧,肖疆.基于二阶散射的海面三尺度雷达后向散射模型[J].电子学报,2008,36(9):1771-1775. |
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| 作者姓名： | 余颖 王小青 朱敏慧 肖疆 |
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| 作者单位： | 1. 中国科学院电子学研究所微波成像技术国家重点实验室,北京,100190;中国科学院研究生院,北京,100190
2. 中国科学院电子学研究所微波成像技术国家重点实验室,北京,100190 |
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| 摘 要： | 基于二阶组合表面模型和随机多尺度散射模型,本文提出一种既包含大尺度、中小尺度散射又包含二阶布拉格散射的海面雷达后向散射模型.在本模型框架下,我们推导了二阶布拉格散射的表达式,并根据弱流体动力作用理论推导出流体动力调制函数解析表达式.另外,我们通过全局和本地坐标系中观测角度的转换实现了倾斜调制.仿真结果表明该模型结果与实测数据相符,并优于前两者的模型结果.
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| 关 键 词： | 海面 雷达后向散射 二阶散射 流体动力调制 倾斜调制 |
| 收稿时间： | 2007-05-30 |
Three-Scale Radar Backscattering Model of the Ocean Surface Based on Second-Order Scattering |
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| YU Ying,WANG Xiao-qing,ZHU Min-hui,XIAO Jiang.Three-Scale Radar Backscattering Model of the Ocean Surface Based on Second-Order Scattering[J].Acta Electronica Sinica,2008,36(9):1771-1775. |
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| Authors: | YU Ying WANG Xiao-qing ZHU Min-hui XIAO Jiang |
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| Affiliation: | YU Ying1,2,WANG Xiao-qing1,ZHU Min-hui1,XIAO Jiang1(1.National Key Laboratory of Microwave Imaging Technology,Institute of Electronics,Beijing 100190,China,2.Graduate University of Chinese Academy of Sciences,China) |
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| Abstract: | Based on the second-order composite surface and stochastic multi-scale models,an ocean surface backscattering model was proposed,including both the large-/intermediate-/small-scale scattering and the second-order Bragg scattering.Within this frame,we derived a second-order Bragg scattering expression,and developed an analytic solution of hydrodynamic modulation function according to weak hydrodynamic interaction theory.In addition,tilt modulation was simulated through the observation angle transform between... |
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| Keywords: | ocean surface radar backscattering second-order scattering hydrodynamic modulation tilt modulation |
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