| 基于高频混合方法的海上目标电磁散射特性分析 |
| |
| 引用本文： | 崔凯,许小剑,毛士艺.基于高频混合方法的海上目标电磁散射特性分析[J].电子与信息学报,2008,30(6):1500-1503. |
| |
| 作者姓名： | 崔凯 许小剑 毛士艺 |
| |
| 作者单位： | 北京航空航天大学电子信息工程学院,北京,100083 |
| |
| 摘 要： | 三面空腔反射器是一种特殊的反射结构,空腔内的多次散射是形成其雷达散射截面(RCS)的主要贡献之一.该文在计算机图形学裁剪的基础上,改进了现有的区域投影方法,结合物理光学法和阻抗边界条件,分析了正确处理目标几何结构的遮挡和消隐之后三面空腔反射器内的多次散射机理.最后,将阻抗边界条件扩展到海上环境,对两类带有反射器结构的海上舰船简化模型进行了RCS计算与分析.结果表明,海面与目标之间以及目标内部的多次散射作用在一定情况下可形成明显的散射特征.
|
| 关 键 词： | 雷达散射截面 三面空腔反射器 多次散射 区域投影法 混合方法 海上目标 电磁 散射特性分析 Hybrid Method High Frequency Based Sea Surface Model Ship 散射特征 情况 作用 结果 计算 简化模型 海上舰船 几何结构 环境 扩展 |
| 文章编号： | 1009-5896(2008)06-1500-04 |
| 收稿时间： | 2006-11-24 |
| 修稿时间： | 2006年11月24 |
EM Backscattering of Simplified Ship Model over Sea Surface Based on a High Frequency Hybrid Method |
| |
| Cui Kai,Xu Xiao-jian,Mao Shi-yi.EM Backscattering of Simplified Ship Model over Sea Surface Based on a High Frequency Hybrid Method[J].Journal of Electronics & Information Technology,2008,30(6):1500-1503. |
| |
| Authors: | Cui Kai Xu Xiao-jian Mao Shi-yi |
| |
| Affiliation: | School of Electronic and Information Engineering, BeiHang University, Beijing 100083, China |
| |
| Abstract: | This paper focuses on a special kind of three-plate cavity reflectors which is useful in EM backscattering model of large complex targets over land or sea surface. After employing Computer Graphics (CG) method to eliminate shadowing effect, Physical Optics (PO) and Area Projection (AP) method are combined to analyze specular reflection and multiple scattering mechanism to calculate the Radar Cross Section (RCS) of different reflectors. Finally, by combining with sea reflection coefficient under different sea states, a procdure is proposed to compute the RCS of simplified ship targets over sea surface. The results show that multiple scattering can form obvious RCS characterization under certain conditions. |
| |
| Keywords: | RCS Three-plate cavity reflector Multiple scattering Area projection |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《电子与信息学报》浏览原始摘要信息 |
|
点击此处可从《电子与信息学报》下载全文 |
