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一种基于互局部化Wigner-Ville分布的瞬时频率估计 被引量：2

AN INSTANTANEOUS FREQUENCY ESTIMATION METHOD BASED ON CROSS LOCALIZED WIGNER-VILLE DISTRIBUTIONS
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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。 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.
作者 徐春光 谢维信
机构地区 西安电子科技大学电子工程学院 深圳大学
出处 《电子科学学刊》 EI CSCD 2000年第5期753-758,共6页
基金 国防科技预研项目资助
关键词 互局部化 WIGNER-VILLE分布 瞬时频率估计 Iterative instantaneous frequency estimation, Cross localized Wigner-Ville distribution
分类号 TN911.7 [电子电信—通信与信息系统]
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同被引文献13

  • 1Boashash B. Interpreting and estimating the instan taneous frequency of a signal: Part U : Algorithms[J]. Proc of IEEE, 1992,80(4) :540 - 568.
  • 2Rao P, Taylor F J. Estimation of instantaneous frequency using the Wigner distribution[ J]. Electron Lett, 1990,26:246 - 248.
  • 3B Boashash B, O' Shea P. Polynomial Wigner-Ville distributions and their relationship to time-varying higher order spectra [ J ]. Proc of IEEE, 1994,42( 1 ) : 216 - 220.
  • 4Boashash B, O'Shea P. Use of the cross Wigner-Ville distribution for estimation of instan'taneous frequency[J]. Proc of IEEE, 1993, 41 (3) : 1439 - 1444.
  • 5Emresoy M K, EI-Jaroudi A. Iterative instantaneous frequency estimation and adaptive matched spectrogram[J]. Signal Processing, 1998,64 (2) : 157 - 165.
  • 6Boashash B.Interpreting and estimating the instantane ous frequency of signal:Part I, Fundamentals. Proc. of IEEE, 1992, 80(4):520-538.
  • 7Boashash B.Interpreting and estimating the instantaneous frequency of signal:Part II, Algorithms. Proc. Of IEEE, 1992, 80(4):540-568.
  • 8Ristic B, Boashash B. Instantaneous frequency estimation of quadratic and cubic FM signals using the cross polynomial Wing-Ville distribution. IEEE Trans. on Signal Processing, 1996,SP-44(6): 1549-1553.
  • 9Emresoy M K, EI-Jaroudi. A-Iterative instantaneous frequency estimation and adaptive matched spectrogram. Signal Processing, 1998,64(2): 157-165.
  • 10Huang N E,Shen Z, Long S R,et al. The Empirical Mode Decomposition and the Hilbert Spectum for Nonlinear and Non-Stationary Time Series Analysis[J].proc.Roy.Soc.,London,A,1998,454:903-995.

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电子科学学刊
2000年 第5期

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