一種基于互局部化Wigner-Ville分布的瞬時(shí)頻率估計(jì)
AN INSTANTANEOUS FREQUENCY ESTIMATION METHOD BASED ON CROSS LOCALIZED WIGNER-VILLE DISTRIBUTIONS
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摘要: 本文提出一種基于互局部化Wigner-Ville分布(Cross Localized Wigner-Ville Distribution,X-LWVD)的迭代瞬時(shí)頻率估計(jì)方法,以解析方法分析了無噪聲情況下該方法的收斂性,用計(jì)算機(jī)仿真方法比較了在噪聲背景中其與譜圖(Spectrogram)峰值檢測、Wigner-Ville分布(Wigner-Ville Distribution,WVD)峰值檢測的性能,證明了該方法是一種統(tǒng)計(jì)有效的瞬時(shí)頻率估計(jì)方法。
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關(guān)鍵詞:
- 互局部化Wigner-Ville分布; 迭代瞬時(shí)頻率估計(jì)
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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