| 飞行器目标频率响应散射特性 |
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| 引用本文： | 刘战合,黄沛霖,武哲.飞行器目标频率响应散射特性[J].航空学报,2009,30(4):643-648. |
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| 作者姓名： | 刘战合 黄沛霖 武哲 |
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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 |
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| 基金项目： | 国家“973”计划(61320) |
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| 摘 要： | 为研究飞行器目标散射频率响应特性和隐身、反隐身原理，对两种飞行器平板缩比模型进行了系列测试和计算研究，推导和验证了简单目标（金属球）的频率响应特性在飞行器目标上的适用性，并推广到如飞行器复杂散射体的分析。提出了划分瑞利区、谐振区、高频区的新方法，指出飞行器具有隐身能力极限的概念；研究了目标多频散射的极化特性，发现频率降低时，水平极化下全向雷达散射截面（RCS)均值逐渐增大，垂直极化时减小。得到了两种飞行器目标处于瑞利区、谐振区时依靠外形隐身所能达到的RCS极限值。结果分析表明，在瑞利区和谐振区，目前的外形隐身措施存在不能超越的极限，在这两个区域的雷达隐身需结合外形和材料隐身技术。
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| 关 键 词： | 飞行器 电磁散射 频率 雷达散射截面 极化 |
| 收稿时间： | 2008-01-28 |
| 修稿时间： | 2008-03-24 |
Frequency Response Scattering Characteristic of Aircraft |
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| Liu Zhanhe,Huang Peilin,Wu Zhe.Frequency Response Scattering Characteristic of Aircraft[J].Acta Aeronautica et Astronautica Sinica,2009,30(4):643-648. |
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| Authors: | Liu Zhanhe Huang Peilin Wu Zhe |
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| Institution: | School of Aeronautic Science and Engineering, Beijing University of Aeronautics and Astronautics |
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| Abstract: | The radar cross section (RCS) of multi-scale models for two different aircraft is tested and computed to analyze the frequency response characteristics of aircraft scattering and study the stealth and antistealth theory. The frequency response characteristics of scattering from a simple target such as a metal sphere is deduced and validated to be applicable for complex objects such as an aircraft. A new method is presented to divide the Reighlay region, resonance region and high-frequency region of an aircr... |
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| Keywords: | aircraft electromagnetic scattering frequency radar cross section (RCS polarization |
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