| 分数阶Fourier变换域的反辐射导弹检测技术 |
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| 引用本文： | 李宝,关键,郭海燕,赵涛. 分数阶Fourier变换域的反辐射导弹检测技术[J]. 雷达科学与技术, 2009, 7(2): 91-94 |
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| 作者姓名： | 李宝 关键 郭海燕 赵涛 |
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| 作者单位： | 海军航空工程学院电子信息工程系,山东烟台,264001;海军驻锦州军代室,辽宁锦州,121000 |
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| 基金项目： | 教育部新世纪优秀人才支持计划，国家自然科学基金 |
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| 摘 要： | 通过推导单频信号和线性调频（LFM）信号旋转角正负对称的分数阶Fourier变换（FRFT）模函数,得到一个有用的结论：单频信号正负对称旋转角的FRFT模值相等,模函数关于中心点对称,而对于LFM信号,其模幅度差别很大。根据此结论提出了一种基于观测信号正负对称旋转角的FRFT模之差的反辐射导弹（ARM）检测方法。此方法可以有效地消除载机信号的干扰。仿真结果表明,此方法在低信噪比下能有效地检测出ARM。
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| 关 键 词： | 分数阶 Fourier变换 反辐射导弹 线性调频信号 |
ARM Detection in Fractional Fourier Transform Domain |
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| LI Bao,GUAN Jian,GUO Hai-yan,ZHAO Tao. ARM Detection in Fractional Fourier Transform Domain[J]. Radar Science and Technology, 2009, 7(2): 91-94 |
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| Authors: | LI Bao GUAN Jian GUO Hai-yan ZHAO Tao |
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| Affiliation: | 1.Department of Electronic and Information Engineering;Naval Aeronautical Engineering Institute;Yantai 264001;China;2.Military Representatives Office of Navy in Jinzhou;Jinzhou 121000;China |
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| Abstract: | In this paper,the FRFT models with two symmetry inverse rotation angles of LFM signal and monochromatic signal are researched.A conclusion is obtained:the FRFT models with two symmetry inverse rotation angles of LFM signal are different and the FRFT models of monochromatic signal are the same.Based on this characteristic,a new method for detecting ARM based on difference of FRFT models is proposed.In this method,the ARM carrier signal is suppressed effectively,and the detection performance is good in low SN... |
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| Keywords: | fractional Fourier transform anti radiation missile（ARM） LFM signal |
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