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
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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。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.
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