| 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。 |
| 关键词: 信号检测 分数阶Fourier域 线性调频信号 聚集性检测 |
| DOI：10.3969/j.issn.1001-893X. |
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| 基金项目: |
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| Energy Concentration Detection of LFM Signal by Fractional Fourier Transform |
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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. |
| Key words: Signal detection,Fractional Fourier transform,LFM,Energy concentration detection, |
