| 粗糙表面的多路径散射模型研究 |
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| 引用本文： | 李燕. 粗糙表面的多路径散射模型研究[J]. 电子科技, 2011, 24(1): 81-85 |
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| 作者姓名： | 李燕 |
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| 作者单位： | (中国人民解放军海军 701工厂 研发部,北京 100016) |
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| 摘 要： | 要提高雷达低角跟踪目标的精度,必须建立精确的多路径反射模型.采用小平面模型描述自然散射表面,利用基尔霍夫近似理论建立了适用于任意粗糙表面的低空多路径散射模型,考虑了阴影和多次散射对多径回波信号的影响.基于此模型仿真研究了多路径回波信号与波长及粗糙表面参量间的各种关系;分析了雷达接收到的直达信号和反射信号之间的相关性.
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| 关 键 词： | 小平面模型 散射模型 低仰角多路径 相关系数 |
A New Multipath Scattering Model of Rough Surface |
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| Li Yan. A New Multipath Scattering Model of Rough Surface[J]. Electronic Science and Technology, 2011, 24(1): 81-85 |
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| Authors: | Li Yan |
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| Affiliation: | Li Yan(R & D,No.701 Factory of PLA(N),Beijing 100016,China) |
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| Abstract: | To improve the tracking precision of low-angle radar,it is necessary to consider multi-path effect caused by reflection of the earth.In this paper,a new model of multi-path scattering considering surface roughness,masking effect and multiple scattering respectively is presented based on the facet model whose scattering coefficient is derived based on the Kirchhoff theory.Signals from various rough surfaces based on various wavelength are computed.The pertinence of direct and echo signals is analyzed. |
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| Keywords: | facet model scattering model multi-path of low-angle pertinence coefficient |
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