| 一种基于互局部化Wigner-Ville分布的瞬时频率估计 |
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| 引用本文： | 徐春光,谢维信.一种基于互局部化Wigner-Ville分布的瞬时频率估计[J].电子与信息学报,2000,22(5):753-758. |
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| 作者姓名： | 徐春光 谢维信 |
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| 作者单位： | 1. 西安电子科技大学电子工程学院,西安,710071
2. 深圳大学,深圳,518060 |
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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。
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| 关 键 词： | 互局部化Wigner-Ville分布 迭代瞬时频率估计 |
| 收稿时间： | 1998-11-16 |
| 修稿时间： | 1998-11-16 |
AN INSTANTANEOUS FREQUENCY ESTIMATION METHOD BASED ON CROSS LOCALIZED WIGNER-VILLE DISTRIBUTIONS |
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| Xu Chunguang,Xie Weixin.AN INSTANTANEOUS FREQUENCY ESTIMATION METHOD BASED ON CROSS LOCALIZED WIGNER-VILLE DISTRIBUTIONS[J].Journal of Electronics & Information Technology,2000,22(5):753-758. |
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| Authors: | Xu Chunguang Xie Weixin |
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| Affiliation: | Xu Chunguang
(School of Electronic Engineering,Xidian University,Xi'an 710071)Xie Weixin
(Shenzhen University,Shenzhen 518060) |
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| 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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| Keywords: | Iterative instantaneous frequency estimation Cross localized Wigner-Ville distribution |
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