| 一种改进的非磁化等离子体SO-FDTD算法 |
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| 引用本文： | 张厚,许志永,殷雄,赵振维,吴瑞.一种改进的非磁化等离子体SO-FDTD算法[J].西安电子科技大学学报,2015,42(3):168-172. |
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| 作者姓名： | 张厚 许志永 殷雄 赵振维 吴瑞 |
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| 作者单位： | 空军工程大学防空反导学院;中国电波传播研究所 |
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| 摘 要： | 针对时域有限差分法解决复杂等离子体问题时效率低的问题,提出了一种改进的移位算子有限差分(SO-FDTD)算法.运用该算法计算了非磁化等离子体平板对电磁波的反射系数和透射系数,为等离子体中电磁波传播特性的分析提供了一定的理论指导.该算法采用内存优化算法减少了计算中的迭代变量,节约了系统内存,提高了计算速度.仿真实验表明,改进型算法的计算效率明显优于以往文献中提出的SOFDTD算法,并且计算结果与解析解吻合得很好.
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| 关 键 词： | 等离子体 非磁化 移位算子 时域有限差分法 |
| 收稿时间： | 2014-01-17 |
Improved SO-FDTD method for non-magnetized plasmas |
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| ZHANG Hou;XU Zhiyong;YIN Xiong;ZHAO Zhenwei;WU Rui.Improved SO-FDTD method for non-magnetized plasmas[J].Journal of Xidian University,2015,42(3):168-172. |
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| Authors: | ZHANG Hou;XU Zhiyong;YIN Xiong;ZHAO Zhenwei;WU Rui |
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| Affiliation: | (1. Air and Missile Defense College, Air Force Engineering Univ., Xi'an 710051, China;
2. China Research Institute of Radio-wave Propagation, Qingdao 266107, China) |
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| Abstract: | To improve the calculation efficiency of the FDTD method when dealing with the complex plasma problem, an improved shift operator-finite difference time domain(SO-FDTD) method for non-magnetized plasmas is prensented, and applied to calculate the reflection and transmission coefficients of the non-magnetized plasma flat, which provides a certain theoretical guidance to analysis of the propagation characteristics of the EM waves interacting with the plasma. The memory-minimized algorithm is applied to the method to save the system memory and improve the calculation speed. It is shown that the high efficiency and accuracy of the method are validated by comparing with the analytical method and the SO-FDTD method proposed in the recent references. |
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| Keywords: | non-magnetized plasmas shift operator finite difference time domain |
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