摘要
提出了一种基于分数阶傅里叶变换 (fractionalfouriertransform ,FRFT)估计线性调频信号 (lmearFM ,LFM)的参数的方法 .该方法通过计算LFM的FRFT ,然后用匹配滤波的方法确定LFM在时频域内正交投影位置 。
A new approach based on fractional fourier transfor m to estimate the chirp constant of LFM is presented. The method is to find the ax is in time-frequency (TF) domain, which is perpendicular to the TF distribution of LFM, by using a match filter.
