| 分数阶Fourier域多分量微弱LFM信号的检测 |
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| 引用本文： | 邹世杰,刘锋.分数阶Fourier域多分量微弱LFM信号的检测[J].舰船电子对抗,2010,33(2):87-89,115. |
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| 作者姓名： | 邹世杰 刘锋 |
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| 作者单位： | 海军航空工程学院,烟台,264001 |
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| 摘 要： | 为了提高对多分量微弱LFM信号的检测能力,提出了一种基于分数阶Fourier域非均匀采样理论的信号检测方法。首先提出了一种自适应非均匀采样方法,建立了该方法的模型,得到了非均匀采样LFM信号在分数阶Fourier域的频谱表达式。在此基础上,对多分量非均匀采样LFM信号进行了检测研究。计算机仿真结果表明,同传统的信号检测方法相比,该方法对微弱LFM信号具有较好的检测能力,而且减少了运算量,满足了实时性要求。
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| 关 键 词： | 自适应非均匀采样 分数阶Fourier变换 多分量微弱LFM信号 检测 |
Detection of Multi-Component Weak LFM Signal in Fractional Fourier Domain |
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| ZOU Shi-jie,LIU Feng.Detection of Multi-Component Weak LFM Signal in Fractional Fourier Domain[J].Shipboard Electronic Countermeasure,2010,33(2):87-89,115. |
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| Authors: | ZOU Shi-jie LIU Feng |
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| Affiliation: | Naval Aeronautical Engineering Institute;Yantai 264001;China |
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| Abstract: | In order to improve the detection ability to multi-component weak linear frequency modulation(LFM) signal,a kind of signal detection method based on the nonuniform sampling theory of fractional Fourier domain is presented.Firstly,this paper proposes a self-adaptive nonuniform sampling method,and establishes the model of this method,then fetches the spectrum expression of the nonuniform sampling LFM signal in fractional Fourier domain,based on which,detects and studies the multi-component nonuniform sampling... |
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| Keywords: | self-adaptive nonuniform sampling fractional Fourier transform multi-component weak LFM signal detection |
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