【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。更多还原

【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.更多还原