摘要
为了能够进一步准确地估计出雷达信号的瞬时频率,在原有的Morlet小波基函数的基础上,提出了一种改进的Morlet小波基函数,并将其用于小波脊线的提取。用改进后的Morlet小波基函数来提取雷达信号的小波脊线特征,从而估计出雷达信号的瞬时频率。仿真结果表明,用改进后的Morlet小波基函数提取出来的雷达特征比利用原有的Morlet小波基函数提取出来的雷达特征性能更优,具有更好的时频综合特性及良好的抑制噪声能力,其方法是可行的。
In order to estimate the instantaneous frequency of the radar signal accurately, this paper proposed a new Morlet wavelet basis function based on the existing one, and used it for extracting wavelet ridge. The results of simulation show that the performance of the extraction of radar signal features which is based on modified morlet wavelet basis function better than the exsisting one, and the method is feasible.
出处
《微型机与应用》
2015年第10期70-73,共4页
Microcomputer & Its Applications
