| 等离子体覆盖目标散射特性的RKETD-FDTD分析 |
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| 引用本文： | 刘崧,刘少斌.等离子体覆盖目标散射特性的RKETD-FDTD分析[J].南京航空航天大学学报,2009,41(4). |
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| 作者姓名： | 刘崧 刘少斌 |
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| 作者单位： | 1. 南京航空航天大学信息科学与技术学院,南京,210016;南昌大学理学院,南昌,330031
2. 南京航空航天大学信息科学与技术学院,南京,210016 |
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| 基金项目： | 毫米波国家重点实验室开放课题，"青蓝工程"中青年学术带头人人才，2008全国博士学术论坛推荐优秀论文 |
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| 摘 要： | 采用一种既保证计算的高效率,又有较高的计算精度的龙格库塔指数时程差分时域有限差分法(RKETD-FDTD)研究了等离子体的散射特性.该算法解决了电磁波在色散介质中传播的计算问题,导出了在等离子体介质中RKETD-FDTD迭代公式.文中分别计算了等离子体平板的反射系数和非均匀等离子体覆盖导体柱的散射特性,所得结果与解析结果相符合,并且表明等离子体涂层选择合适的碰撞频率,能有效地减小目标的雷达散射截面(RCS).
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| 关 键 词： | 等离子体 散射特性 时域有限差分法 电磁波 |
Analysis for Scattering Characteristics of Targets Coated with Plasma by RKETD-FDTD Method |
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| Liu Song,Liu Shaobin.Analysis for Scattering Characteristics of Targets Coated with Plasma by RKETD-FDTD Method[J].Journal of Nanjing University of Aeronautics & Astronautics,2009,41(4). |
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| Authors: | Liu Song Liu Shaobin |
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| Institution: | 1.College of Information Science and Technology;Nanjing University of Aeronautics & Astronautics;Nanjing;210016;China;2.School of Sciences;Nanchang University;Nanchang;330031;China |
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| Abstract: | The scattering characteristic of the plasma is analyzed by the finite-difference time-domain(FDTD) method based on the Runge-Kutta exponential time differencing(RKETD) technique with the high accuracy and the efficiency.The problem is solved by the electromagnetic wave propagation in frequency dispersion medium.The RKETD-FDTD formulations for the plasma are derived.The method is used to calculate the reflection coefficient for a nonmagnetized collision plasma slab and the radar scattering sections(RCS) of p... |
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| Keywords: | plasma scattering characteristics finite-difference time-domain method electromagnetic wave |
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