| 二维机翼雷达散射截面特性分析 |
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| 引用本文： | 张昆,薛晓春.二维机翼雷达散射截面特性分析[J].飞机设计,2008,28(1):5-9. |
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| 作者姓名： | 张昆 薛晓春 |
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| 作者单位： | 北京航空航天大学,航空科学与工程学院,北京,100083 |
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| 摘 要： | 以时域有限差分法（FDTD）计算了不同后掠角的后掠翼和三角翼的雷达散射截面（RCS），并对其分布情况进行了分析；计算了不同后掠角的后掠翼和三角翼在多个频段的RCS，并按照不同的威胁判断求出平均值，得出RCS随频率的变化情况。通过分析RCS随方位和频率的变化情况，研究了外形隐身技术运用的一般原则，并探讨了吸波材料所需的最佳吸收频率和涂覆位置。通过对简化情况的分析，对雷达隐身技术运用的一般原则进行了讨论，对于实际的复杂工程实践有重要的参考价值。
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| 关 键 词： | 雷达散射截面 隐身 时域有限差分法(FDTD) |
| 文章编号： | 1673-4599（2008）01-0005-05 |
| 收稿时间： | 2007-09-14 |
| 修稿时间： | 2008-01-08 |
Analysis on RCS Characteristics of 2-Dimensional Airplane Wing |
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| ZHANG Kun,XUE Xiao-chun.Analysis on RCS Characteristics of 2-Dimensional Airplane Wing[J].Aircraft Design,2008,28(1):5-9. |
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| Authors: | ZHANG Kun XUE Xiao-chun |
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| Institution: | ZHANG Kun, XUE Xiao-chun ( School of Aeronautic Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China) |
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| Abstract: | Different sweepback sweepback-wing and triangle-wing＇s radar cross section （RCS）are computed with finite difference time domain（FDTD） ,and the profiles for the RCS are analyzed. Different sweepback-wing and triangle-wing＇s RCS in a lot of wave bands are computed, and the variety of RCS when frequency changes is obtained according to the mean value for different dangerous region. The principle of the shape-stealth technology is investigated by analyzing the RCS profiles in situation and frequency. The best-absorbing frequency and place for using absorbing material are discussed. The principia of radar stealth are discussed by predigested instance, and may do some help in complex engineering practice. |
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| Keywords: | radar cross section(RCS) stealth finite difference time domain(FDTD) |
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