| 各向异性双层球的电磁散射分析 |
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| 引用本文： | 潘伟良,任伟.各向异性双层球的电磁散射分析[J].杭州电子科技大学学报,2006,26(2):1-4. |
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| 作者姓名： | 潘伟良 任伟 |
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| 作者单位： | 杭州电子科技大学电子信息学院,浙江,杭州,310018 |
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| 摘 要： | 该文分析的是一个各向异性双层球在平面波激励下的散射特性.在均匀各向异性介质波函数理论的基础上,给出各向异性介质层在任意电磁场激励下的散射解析解.根据不同类型的矢量球波函数,建立无源各向同性球层内以及自由空间内的电磁场在球坐标系下的级数表达式.最后,利用电磁场的边界条件,建立方程求得各个区域内的电磁场.利用求得的散射系数提取各向异性双层球的一般物理特性-雷达散射截面（RCS）,并且与已有文献上的数值结果进行对比,得到了比较合理的结果.
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| 关 键 词： | 电磁散射 各向异性 矢量球波函数 矢量球谐函数 雷达散射截面 |
| 文章编号： | 1001-9146（2006）02-0001-04 |
| 收稿时间： | 2005-10-12 |
| 修稿时间： | 2005年10月12 |
An Analysis of Electromagnetic Scattering of Anisotropic Media Layered Sphere |
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| PAN Wei-liang,REN Wei.An Analysis of Electromagnetic Scattering of Anisotropic Media Layered Sphere[J].Journal of Hangzhou Dianzi University,2006,26(2):1-4. |
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| Authors: | PAN Wei-liang REN Wei |
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| Abstract: | An analysis of scattering characteristic of homogeneous anisotropic media(HAM) sphere inspired with plane electromagnetic will be given in this paper. Based on the HAM wave function theory,an analytical solution of electromagnetic fields in HAM inspired with arbitrary electromagnetic is obtained.Whereafter,electromagnetic fields in form of series expressions is made in terms of the vector spherical wave funcions in the source-free homogeneous isotropic media(HIM) layer as well as in free space.Applying boundary conditions on the spherical interface between air and HAM sphere,and on layers in the sphere between the HAM layer and HIM layer,the electromagnetic fields in any regions are derived.At last,we distill radar cross section(RCS) in terms of scattering coefficients according to which accuracy is verified by comparing to the literatural results. |
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| Keywords: | electromagnetic scattering anisotropic media vector spherical wave funcions vector spherical harmo-nious functions radar cross section |
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