基于局域波的非参数瞬时频率估计

被引:3
作者
胡红英
马孝江
机构
[1] 大连理工大学精密与特种加工教育部重点实验室
关键词
极大似然; 瞬时频率; 局域波法;
D O I
暂无
中图分类号
TN911 [通信理论];
学科分类号
081002 ;
摘要
对于频率缓变的单一分量信号叠加噪声的情况,根据其瞬时频率中真实瞬时频率占主导趋势的特点,先使用平滑相位差分法——极大似然法估计噪声信号的瞬时频率,用局域波分解法求极大似然法估计瞬时频率的趋势项,从而得到与理论瞬时频率相符的结果,与其他的瞬时频率估计方法相比,本方法具有精度高、计算量小的优点.
引用
收藏
页码:1303 / 1306
页数:4
相关论文
共 7 条
[1]  
Time-frequency reassignment: from principles to algorithms. E CHASSANDE,F AUGER,P FLANDRIN. Applications in Time-Frequency Signal Processing . 2003
[2]  
Statistically/computationally efficient frequency estimation. S Kay. IEEE International Conference of Acoustic, Speech, and Signal Processing[C], New York, USA: IEEE . 1988
[3]  
Estimation of the instantaneous frequency using the discrete Wigner distribution. P Rao,F J Taylor. Electronics Letters . 1990
[4]  
Estimating and interpreting the instantaneous frequency of signal-part 2: Algorithms and applications. Boualem Boashash. Proceeding of the IEEE . 1992
[5]  
The empirical mode decomposition and Hilbert spectrum for nonlinear and non-stationary time series analysis. N E Huang,Z Shen,S R Long,M L Wu. Proceedings of the Royal Society of London . 1998
[6]  
Empirical mode decomposition as a filter bank. Flandrin P,Rilling G,Goncalves P. Signal Processing Lett. IEEE . 2004
[7]  
A new method for estimating the instantaneous frequency based on maximum likelihood. F De Bastos,M de Campos. 2000 IEEE Inter Conf on ICASSP Proceedings[C], Istanbul, Turkey: IEEE . 2000