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三维介质体及薄理想导体曲面的FDTD建模 被引量:3
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作者 谢袁春 高本庆 邓次平 《电子学报》 EI CAS CSCD 北大核心 2001年第6期835-838,共4页
提出了一种基于场量位置的平均网格电参数法建模任意形状的介质体 ,引入辅助磁场和电场分量建模薄理想导体曲面的三维FDTD建模方法 .采用提出的方法计算了介质谐振器和圆锥喇叭天线 .与已发表文献中的结果比较 ,表明了计算结果的正确性 。
关键词 D-FDTD 薄理想导体建模 三维介质体 曲面 电磁场
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频率步进圆锥扫描体制天线对目标回波信号的影响 被引量:2
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作者 谢袁春 高本庆 邓次平 《雷达与对抗》 2001年第1期8-12,共5页
分析了采用频率步进机械圆锥扫描体制雷达系统 ,由于频率跳变和天线不稳定转动对目标回波信号检测的影响 ,包括对角误差信号的提取和高距离分辨波形 (HRRP)的影响 ,并针对两种不同的情况 。
关键词 天线 目标回波信号 频率步进 圆锥扫描 高距离分辨波形
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MWI in Cylindrical Coordinates and Its Application
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作者 谢袁春 高本庆 邓次平 《Journal of Beijing Institute of Technology》 EI CAS 2000年第2期176-182,共7页
Based on FDTD difference expressions and eigenfunctions of Maxwell functions in cylindrical coordinates, mesh wave impedances (MWIs) in 2D and 3D cylindrical coordinates were introduced. Combined with the concept of p... Based on FDTD difference expressions and eigenfunctions of Maxwell functions in cylindrical coordinates, mesh wave impedances (MWIs) in 2D and 3D cylindrical coordinates were introduced. Combined with the concept of perfectly matched layer (PML), MWI PML absorbing boundary condition (ABC) algorithm was deduced in 2D cylindrical coordinates. Numerical experiments were done to investigate the validity of MWI and its application in cylindrical coordinates FDTD algorithm. The results showed that MWI in cylindrical coordinates can be used to accurately calculate the numerical reflection error caused by different mesh increments in non uniform FDTD. MWI can also provide theoretical criterion to define the permitted variable range of mesh dimension. MWI PML ABC is easy to be applied and reduces low numerical reflection, which only causes a little higher reflection error compared with Teixeira's PML. 展开更多
关键词 mesh wave impedance cylindrical coordinates finite-difference time-domain perfectly matched layer absorbing boundary condition
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