| 基于 FRFT的多分量对称三角 LFMCW 信号检测 |
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| 引用本文： | 张莉,纪秀美,徐会法.基于 FRFT的多分量对称三角 LFMCW 信号检测[J].航天电子对抗,2016(6):29-33. |
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| 作者姓名： | 张莉 纪秀美 徐会法 |
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| 作者单位： | 1. 中国人民解放军31008部队,北京,100091;2. 中国人民解放军31002部队,北京,100091 |
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| 摘 要： | 对称三角线性调频连续波（STLFMCW）信号是一种典型的低截获概率雷达信号。提出一种基于分数阶 Fourier变换（FRFT ）的聚类分析与“逐次消去”相结合的多分量STLFMCW信号检测方法。首先把多分量STLFMCW信号变换到FRFT 域，利用聚类分析法实现对最强信号的检测，然后利用“逐次消去”法实现对其它信号的检测，直至检测到所有信号。最后，仿真验证了该方法的有效性。
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| 关 键 词： | 对称三角线性调频连续波信号 信号检测 分数阶Fourier变换 聚类分析 |
Detection of multicomponent symmetrical triangular LFMCW signal based on f ractional Fourier transform |
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| Abstract: | The symmetrical triangular linear frequency modulated continuous wave (STLFMCW) signal is a sort of typical low probability of intercept (LPI) radar signal .A novel method is presented to detect multi‐component STLFMCW signal based on the FRFT ,clustering analysis and“elimination one by one” .First ,the multicomponent STLFMCW signal is transformed to fractional Fourier domain . The strongest signal is detected by clustering analysis method .Secondly ,the other signal is detected by “elimination one by one”method .Finally ,simulations verify the effectiveness of the method . |
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| Keywords: | STLFMCW signal signal detection FRFT clustering analysis |
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