用TLM法模拟二维三维电磁散射近场和远场 |
|
| [摘要] |
| 数值模拟二维等腰直角三角形导电柱体和三维方形导电柱体对高斯脉冲平面波的电磁散射近场和远场分布。数值结果表明在三角柱体的电磁散射近场中镜面反射并不明显，但在远场却非常明显并且成为最主要的散射方向。三维电磁散射的数值结果表明，二次辐射是电磁散射的主要机理。并且在多个导体目标情况下，各自的散射场将互相干涉形成总的散射场。 |
| [英文摘要] |
| The scattering near-fields of 2D isosceles-rectangular-triangle cylinder and 3D square cylinder have been simulated using the TLM method. Numerical results in 2D case show that the specular reflection is not obvious in the near-field scattering ,but it is obvious and is the dominat reflection in the far-field scattering. Numerical results in 3D case show that the second radiation is the major mechanism for electromagnetic scattering. Near-field scattering images clearly show that when three cylinders exist ,the scattering fields from cylinders will interfere mutually.This phenomenon exists in both backward and forward scattering fields, 3D results also indicate the similarity and symmetry of backward scattering and forward scattering for square cylinder,but the field amplitudes are different |
| [关键词] |
| 微波成象，TLM法，散射近场，散射远场 |
| [作者] |
| 张云华 Yong-Hoon KIM 姜景山 |
| [作者单位] |
| 中科院空间科学与应用研究中心，北京 100080;光州科学技术院，光州 500－712，韩国;中科院空间科学与应用研究中心，北京 100080;Center for Space Science and Applied Research, Academia, S inica , Beijing 100080;Center for Space Science and Applied Research, Academia, S inica , Beijing 100080; |
| [刊名] |
| 微波学报 |
| [英文刊名] |
| JOURNAL OF MICROWAVES |
| [期刊类别] |
| 无线电电子学与电信技术 |
| [年 卷 期] |
|
2000 16 03 点击免费下载论文：用TLM法模拟二维三维电磁散射近场和远场 |