| 高阶FDTD方法在三维散射问题中的应用 |
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| 引用本文： | 王志,江谷传.高阶FDTD方法在三维散射问题中的应用[J].合肥工业大学学报(自然科学版),2009,32(11). |
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| 作者姓名： | 王志 江谷传 |
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| 作者单位： | 安徽新华学院,电子通信工程学院,安徽,合肥,230088 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 从麦氏方程出发,详细推导了三维情形下散射问题中高阶FDTD方法的迭代公式,并实现了该方法对应的高阶PML吸收边界条件;在此基础上,对传统近远场外推公式进行了改进,将三次递归多项式理论与传统外推方法结合,提出了高阶外推方法,并将所作的改进对三维导体和介质目标的电磁散射特性进行了数值验证.
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| 关 键 词： | 高阶时域有限差分 理想匹配层 近远场外推 |
High-order FDTD for calculating three-dimensional scattering problems |
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| WANG Zhi,JIANG Gu-chuan.High-order FDTD for calculating three-dimensional scattering problems[J].Journal of Hefei University of Technology(Natural Science),2009,32(11). |
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| Authors: | WANG Zhi JIANG Gu-chuan |
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| Abstract: | The high-order FDTD formulation of three-dimensional scattering problems based on Maxwell's equations is introduced in detail and the PML absorbing boundary conditions corresponding to this method is presented. To improve the accuracy, the cubic polynomial interpolation method is combined with the near-to-far field transform theory. The scattering feature of three targets is computed with the new method. Numerical results are compared with the results obtained by the traditional FDTD method. |
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| Keywords: | high-order finite difference time domain(FDTD) perfectly matched layer near-to-far field transform |
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