| 微小卫星雷达隐身性能的在轨逆合成孔径雷达成像验证 |
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| 引用本文： | 刘斌,张翔,廖文和.微小卫星雷达隐身性能的在轨逆合成孔径雷达成像验证[J].南京航空航天大学学报,2011,43(6). |
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| 作者姓名： | 刘斌 张翔 廖文和 |
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| 作者单位： | 1. 南京航空航天大学机电学院,南京,210016
2. 南京航空航天大学高新技术研究院,南京,210016 |
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| 摘 要： | 成像雷达是空间目标监视系统中的重要组成部分.为深入评估某微小卫星的隐身性能,对卫星的逆合成孔径雷达(ISAR)成像效果进行预测,从雷达成像角度评估卫星的隐身效果.首先简述用于空间目标成像的ISAR成像的基本原理.然后构造卫星的散射点模型,散射系数采用微波暗室的实际测量值.依据仿真雷达系统参数和卫星实际在轨运行参数,计算卫星ISAR成像所需成像时间.对卫星3种飞行姿态,即卫星顶部指向地球表面的隐身姿态、卫星顶部与飞行方向一致和卫星底部指向地球表面两种非隐身姿态,以及不同信噪比情况,进行ISAR仿真,详细分析每种情况下的运动补偿效果和最终ISAR成像效果,说明了卫星隐身设计的有效性.
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| 关 键 词： | 微小卫星 雷达隐身 逆合成孔径雷达(ISAR) 成像 |
Radar-Stealth Performance Evaluation of Minisatellite by In-Orbit Inverse Synthetic Aperture Radar Imaging |
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| Liu Bin
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Zhang Xiang
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Liao Wenhe.Radar-Stealth Performance Evaluation of Minisatellite by In-Orbit Inverse Synthetic Aperture Radar Imaging[J].Journal of Nanjing University of Aeronautics & Astronautics,2011,43(6). |
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| Authors: | Liu Bin Zhang Xiang Liao Wenhe |
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| Institution: | Liu Bin1,Zhang Xiang2,Liao Wenhe2(1.College of Mechanical and Electrical Engineering,Nanjing University of Aeronautics & Astronautics,Nanjing,210016,China,2.Academy of Frontier Science,China) |
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| Abstract: | Imaging radar is an essential part of space surveillance system.The radar-stealth performance of a minisatellite is evaluated and verified from the perspective of radar imaging.Firstly,the principle of inverse synthetic aperture radar(ISAR) imaging is introduced,which is widely used in space object imaging.Then,a multi-scattering model is constructed with proper RCS obtained by practical testing in microwave dark room for the later numerical imaging simulation.Integration time required by the imaging is est... |
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| Keywords: | minisatellite radar stealth inverse synthetic aperture radar(ISAR) imaging |
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