| 三维复杂腔体的时域有限差分法分析 |
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| 引用本文： | 王璟,顾长青.三维复杂腔体的时域有限差分法分析[J].南京航空航天大学学报,2003,35(4):392-394. |
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| 作者姓名： | 王璟 顾长青 |
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| 作者单位： | 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： | 航空科学基金 (0 0 F5 2 0 47)资助项目 |
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| 摘 要： | 在计算三维复杂腔体雷达截面的时域有限差分法中，提出了一种简单的计算域设置方法。它由腔壁和腔口面外侧的吸收边界围成，与包围目标的常用计算域设置方法相比，忽略了腔边缘的绕射作用，但具有节省计算机存储空间，无需额外抽取外腔壁对电磁波的散射。数值结果表明该设置方法是合理可行的。
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| 关 键 词： | 空腔 吸收边界条件 时域有限差分法 三维复杂腔体 雷达 电磁散射 计算域 |
| 文章编号： | 1005-2615(2003)04-0392-03 |
| 修稿时间： | 2002年4月11日 |
FDTD Analysis of Three-Dimensional Complex Cavity |
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| WANG Jing,GU Chang-qing.FDTD Analysis of Three-Dimensional Complex Cavity[J].Journal of Nanjing University of Aeronautics & Astronautics,2003,35(4):392-394. |
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| Authors: | WANG Jing GU Chang-qing |
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| Abstract: | A simple setting method for calculational domain is proposed in the computation of the radar cross section (RCS) of three-dimensional complex cavity with finite-difference time-domain (FDTD) method. The calculational domain is constituted by the walls and absorbing boundary of outside open end of the cavity. Compared with the computation with traditionally calculational domain the target objects is enclosed by absorbing boundaries. Although the diffraction of the edges of cavity is ignored, the method has the merit of saving memory of computer and the additional calculation of electromagnetic scattering outside the cavity is eliminated. The validity of the method is verified by numerical results. |
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| Keywords: | cavity finite-difference time-domain method absorbing boundary calculational region |
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