| 平板目标与二维粗糙介质分形海面复合电磁散射近场特性研究 |
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| 引用本文： | 林华,夏应清.平板目标与二维粗糙介质分形海面复合电磁散射近场特性研究[J].长江大学学报,2006(7). |
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| 作者姓名： | 林华 夏应清 |
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| 作者单位： | 华中师范大学物理科学与技术学院 华中师范大学物理科学与技术学院 湖北武汉430079长江大学计算机科学学院 湖北荆州 湖北武汉 |
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| 基金项目： | 国家自然科学基金资助项目(60301007)，武汉市青年科技晨光计划资助项目(20055003059-32)。 |
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| 摘 要： | 采用二维连续带限分形函数模拟粗糙海面,研究了与其上方金属平板的近场复合电磁散射,将目标分化为微小面元,依据远场条件,运用Kirchhoff近似法导出了复合散射的计算公式,并给出了数值计算结果,进一步将其推至远场,并同远场计算结果进行比较;讨论了复合散射截面随入射角、入射频率及平板尺寸的变化关系。
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| 关 键 词： | 分形粗糙海面 复合电磁散射 近场 |
Characteristics of Near Field of Composite Electromagnetic Scattering between Plate Target and Two-dimensional Rough Medium Fractal Sea Surface |
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| LIN Hua.Characteristics of Near Field of Composite Electromagnetic Scattering between Plate Target and Two-dimensional Rough Medium Fractal Sea Surface[J].Journal of Yangtze University,2006(7). |
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| Authors: | LIN Hua |
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| Abstract: | Rough sea surface is simulated by using two dimensional and continuous band-limited fractal function,the composite electromagnetic scattering of metal plate over it is investigated by dividing the object into minor element.Based on the condition from its remote field,Kirchhoff approximation is used to derive the equation for the composite scattering calculation,and the result of calculation is provided.For the far scatter field,the result is correlated with that of far scatter field,the incident angle,incident frequency and the size of plate of the scattering section are discussed. |
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| Keywords: | rough fractal sea surface composite electromagnetic scattering near field |
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