| 多层球体对电磁场散射响应的求解方法 |
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| 引用本文： | 徐建华,聂在平.多层球体对电磁场散射响应的求解方法[J].地球物理学报,1998,41(6):865-876. |
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| 作者姓名： | 徐建华 聂在平 |
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| 作者单位： | 电子科技大学高能电子学研究所,成都610054 |
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| 基金项目： | 国家自然科学基金!49504060，石油科技中青年创新基金 |
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| 摘 要： | 为建立多层球体对电磁场散射响应的求解方法，将球外入射电磁场分为TM和TE极化波两部分，通过求解Debye位方程可得到多层球体各层中两种极化场的通解形式，利用边界条件建立了TM波（或TE波）球面波阻抗（或导纳）的递推关系，借助于阻抗（或寻纳）导出了球体对TM波（或TE波）所产生散射场的一般表达式．文中具体求解了球体对平面波径向和横向偶极子场的散射响应．
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| 关 键 词： | 多层球体 Debye位 波阻抗 电磁场 散射 |
| 收稿时间： | 1998-04-10 |
SCATTERING RESPONSE OF A MULTILAYERED SPHERE TO EXTERNAL ELECTROMAGNETIC FIELDS |
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| XU JIAN-HUA, NIE ZAI-PING.SCATTERING RESPONSE OF A MULTILAYERED SPHERE TO EXTERNAL ELECTROMAGNETIC FIELDS[J].Chinese Journal of Geophysics,1998,41(6):865-876. |
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| Authors: | XU JIAN-HUA NIE ZAI-PING |
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| Institution: | University of Electronic Science and Technology of China, Chengdu 610054, China |
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| Abstract: | The incident electromagnetic field can be divided into two parts which are TM and TE waves relating to the radial direction. After introducing the Debye .POtentials, the general expressions of these two kinds of polarized fields in each layer of a multilayered sphere can be obtained by solving the equations of Debye POtentials. The recurrence relahonships of surface impedance (for TM wave) and conductance (for TE wave) have been derived by means of boundary conditions. Based on the surface impedance and conductance, the scattering fields of a sphere to TM and TE waves can be determined exactly. Finally, the scattering resPOnses of a multilayered sphere to plane wave, the fields from a radial diPOle and a transverse one have been discussed in detail. |
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| Keywords: | Multilayered sphere Debye potential Wave impedance Electromagnetic field Scattering |
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