一种基于互局部化Wigner-Ville分布的瞬时频率估计
AN INSTANTANEOUS FREQUENCY ESTIMATION METHOD BASED ON CROSS LOCALIZED WIGNER-VILLE DISTRIBUTIONS
-
摘要: 本文提出一种基于互局部化Wigner-Ville分布(Cross Localized Wigner-Ville Distribution,X-LWVD)的迭代瞬时频率估计方法,以解析方法分析了无噪声情况下该方法的收敛性,用计算机仿真方法比较了在噪声背景中其与谱图(Spectrogram)峰值检测、Wigner-Ville分布(Wigner-Ville Distribution,WVD)峰值检测的性能,证明了该方法是一种统计有效的瞬时频率估计方法。Abstract: This paper presents an iterative instantaneous frequency estimation based on a cross localized Wigner-Ville distribution(X-LWVD). The convergence of this method is examined analytically and the performance in noise is compared with the peak detection of spectrogram and the peak detection of Wigner-Ville distribution (WVD) by computer simulation. It is demonstrated that this algorithm is an statistically effective method.
-
Boashash B.Interpreting and estimating the instantaneous frequency of a signal:Part Ⅰ:Fundamentals[J].Proc.of IEEE.1992,80(4):520-538[2]Boashash B.Interpreting and estimating the instantaneous frequency of a signal:Part Ⅱ:Algorithms[J].Proc.of IEEE.1992,80(4):540-568[3]Boashash B,OShea P.Use of the cross Wigner-Ville distribution for estimation of instantaneous frequency.IEEE Trans.on Signal Processing,1993,SP-41(3):1439-1445.[4]Ristic B,Boashash B.Instantaneous frequency estimation of quadratic and cubic FM signals using the cross polynomial Wigner-Ville distribution.IEEE Trans.on Signal Processing,1996,SP-44(6):1549-1553.[5]Emresoy M K,El-Jaroudi A.Iterative instantaneous frequency estimation and adaptive matched spectrogram[J].Signal Processing.1998,64(2):157-165[6]ONeill J C,Flandrin P.Two excursions into the quartic domain.Proc.IEEE-SP International Symposium on Time-Frequency and Time-Scale Analysis,Pittsburgh:1998,321-324. -
计量
- 文章访问数: 2216
- HTML全文浏览量: 62
- PDF下载量: 462
- 被引次数: 0
下载:
