| 基于滤波器组的改进型Wigner-Ville分布 |
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| 引用本文： | 郭福成,皇甫堪.基于滤波器组的改进型Wigner-Ville分布[J].信号处理,2001,17(1):1-4. |
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| 作者姓名： | 郭福成 皇甫堪 |
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| 作者单位： | 国防科大电子科学与工程学院 |
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| 摘 要： | 针对时频分析中频谱图和Wigner-Ville分布(WVD)的不足,本文采用了一种滤波器组和WVD相结合的方法,并对这种改进的分布的性质进行了分析.最后举出实际例子说明它与其他几种常用的时频分析方法相比保留了 WVD能量集中的特性,而同时能够减少WVD带来的交叉项和人工产物,并能减少噪声的影响.
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| 关 键 词： | 时频分析 Wigner-Ville分布 滤波器组 |
The improved Wigner-Ville Distribution based on filter bank |
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| Guo Fucheng,HUANGFU Kan.The improved Wigner-Ville Distribution based on filter bank[J].Signal Processing,2001,17(1):1-4. |
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| Authors: | Guo Fucheng HUANGFU Kan |
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| Abstract: | With the defect of spectrogram and Wigner-Ville Distribution(WVD), this paper put forward a method which combines the filter bank and WVD, then investigated properties of this improved distribution. In the end of this paper practical example illustrated that compared with common used time-frequency analysis methods it retains energy concentration, reduces the cross-terms, artifacts and the effects of noise at the same time. |
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| Keywords: | Time-frequency analysis Wigner-Ville Distribution filter bank |
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