| 基于自适应遗传算法的FDTD中完全匹配层的设置方法 |
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| 引用本文： | 项阳,钱祖平,王增和. 基于自适应遗传算法的FDTD中完全匹配层的设置方法[J]. 微波学报, 2006, 22(3): 28-31,44 |
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| 作者姓名： | 项阳 钱祖平 王增和 |
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| 作者单位： | 解放军理工大学通信工程学院,南京,210007 |
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| 摘 要： | 针对时域有限差分算法进行电磁场数值求解时的PML吸收边界层的设置问题,给出了利用自适应遗传算法对吸收层的电导率进行优化确定吸收层电导率的方法,得到了相同激励源下吸收效果最佳的吸收层各层电导率值,该值只是经典边界电导率取值的边界反射场值的1/5不到,而且随着计算时间的增长,吸收稳定性增强,可以更加准确地进行电磁场数值模拟。
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| 关 键 词： | 时域有限差分 PML吸收边界 遗传算法 |
| 文章编号： | 1005-6122（2006）03-0028-04 |
| 收稿时间： | 2005-01-27 |
| 修稿时间： | 2005-01-272005-06-18 |
A Setup Method of PML in FDTD Based on Genetic Algorithm |
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| XIANG Yang,QIAN Zu-ping,WANG Zeng-he. A Setup Method of PML in FDTD Based on Genetic Algorithm[J]. Journal of Microwaves, 2006, 22(3): 28-31,44 |
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| Authors: | XIANG Yang QIAN Zu-ping WANG Zeng-he |
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| Affiliation: | Communication Engineering College of PLA University of Science and Technology, Nanjing 210007, China |
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| Abstract: | In this paper,the setup method of the PML boundary parameter for FDTD technique which has widely used in electromagnetic propagation problems is considered.A new setup method of the PML boundary parameter is proposed for FDTD technique.The conductivity of the absorb boundary are obtained by means of reflection error is minimized by GA in the same source.The best conductivity values which can minimize the boundary reflection error in the same source.The reflection error of the best conductivity is less 3~4 times than the common values.So the setup method of the PML boundary parameter can enhance electromagnetic calculate precision. |
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| Keywords: | FDTD PML absorb boundary Genetic algorithm |
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