| 一维海面双站电磁散射的二阶小斜率近似研究 |
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| 引用本文： | 苗红梅.一维海面双站电磁散射的二阶小斜率近似研究[J].河南科学,2014(6):994-997. |
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| 作者姓名： | 苗红梅 |
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| 作者单位： | 延安大学物理与电子信息学院,陕西延安716000 |
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| 基金项目： | 国家自然科学基金项目（61379026） |
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| 摘 要： | 运用二阶小斜率近似方法研究了一维海面TE波和TM波的双站电磁散射.把海面的变化看做是高斯随机过程中的皮尔森-莫斯维茨谱,并且用锥形波入射以减少人为截断误差.给出了用二阶小斜率近似法研究一维海面双站散射的数值模拟结果,并与小斜率近似法和矩量法的数值计算结果进行了比较.结果表明,二阶小斜率近似方法比小斜率近似方法更准确.
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| 关 键 词： | 电磁散射 海面 二阶小斜率近似法 |
Bistatic Electromagnetic Scattering Research from 1-D Dielectric Sea Surface Based on Second-order Small Slope Approximation Method |
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| Miao Hongmei.Bistatic Electromagnetic Scattering Research from 1-D Dielectric Sea Surface Based on Second-order Small Slope Approximation Method[J].Henan Science,2014(6):994-997. |
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| Authors: | Miao Hongmei |
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| Institution: | Miao Hongmei (College of Physics and Electronic Information, Yan＇an University, Yan＇an 716000, Shaanxi China) |
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| Abstract: | In this paper,electromagnetic scattering from one dimensional dielectric sea surface is investigated for both TE and TM polarizations employing the second-order small slope approximation（SSA-II）. The second order terms of the small slope approximation method have been numerically implemented in order to obtain accurate results for a large range of slope. The sea surfaces are modeled as realizations of a Gaussian random process with Pierson-Moskowitz spectrum,while the tapered incident wave is chosen to reduce the truncation error. The numerical results obtained by SSA-II are presented by comparison with benchmark numerical method. Results show that the accuracy of SSA-II is better then that of SSA. |
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| Keywords: | electromagnetic scattering sea surface second-order small slope approximation（SSA-II） |
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