| 基于分数阶域的多分量线性调频信号能量聚集性检测 |
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| 引用本文： | 尉宇,孙德宝.基于分数阶域的多分量线性调频信号能量聚集性检测[J].电讯技术,2004,44(3):139-143. |
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| 作者姓名： | 尉宇 孙德宝 |
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| 作者单位： | 华中科技大学,湖北,武汉,430074;武汉科技大学,湖北,武汉,430070;华中科技大学,湖北,武汉,430074 |
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| 摘 要： | 线性调频信号(LFM)在雷达信号中已得到广泛使用。本文利用LFM信号在时频平面上某一角度的能量聚集特征和分数阶Fourier变换的性质，提出了基于分数阶域的能量聚集性检测算法，并定性地分析其检测性能以及提高FRFT的分辨率方法。
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| 关 键 词： | 信号检测 分数阶Fourier域 线性调频信号 聚集性检测 |
| 文章编号： | 1001-893X(2004)03-0139-05 |
Energy Concentration Detection of LFM Signal by Fractional Fourier Transform |
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| WEI Yu.Energy Concentration Detection of LFM Signal by Fractional Fourier Transform[J].Telecommunication Engineering,2004,44(3):139-143. |
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| Authors: | WEI Yu |
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| Abstract: | The linear frequency-modulated(LFM) signal has been used widely in radar signals. By using the characteristics of the linear frequency-modulated signal in fractional domain and its energy being concentrated toward one angle on the time-frequency plane, the energy concentration detection algorithms based on fractional domain are put forward. The detection performance of each algorithm is analyzed qualitatively. |
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| Keywords: | Signal detection Fractional Fourier transform LFM Energy concentration detection |
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