| 基于二进小波变换的实信号的多尺度Hilbert变换和瞬时频率提取 |
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| 引用本文： | 蔡毓,刘贵忠,侯兴松.基于二进小波变换的实信号的多尺度Hilbert变换和瞬时频率提取[J].电子与信息学报,2002,24(8):1028-1034. |
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| 作者姓名： | 蔡毓 刘贵忠 侯兴松 |
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| 作者单位： | 西安交通大学电信学院信息与通信工程系,西安,710049 |
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| 摘 要： | 该文着重讨论了使用二进小波变换方法实现数字Hilbert滤波,特别是使用滤波器组实现多尺度Hilbert滤波所要考虑的各尺度滤波器的设计问题。将多尺度Hilbert方法应用到求信号的瞬时参数中,并利用小波变换的去噪思想,取得了比使用DWT方法去噪更好的去噪效果。
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| 关 键 词： | 二进小波变换 数字Hilbert滤波器 多尺度 |
| 收稿时间： | 2000-12-6 |
| 修稿时间： | 2000年12月6日 |
Dyadic wavelet transform based real signal multiscale hilbert transform and extraction of instantaneous frequency |
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| Cai Yu,Liu Guizhong,Hou Xingsong.Dyadic wavelet transform based real signal multiscale hilbert transform and extraction of instantaneous frequency[J].Journal of Electronics & Information Technology,2002,24(8):1028-1034. |
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| Authors: | Cai Yu Liu Guizhong Hou Xingsong |
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| Affiliation: | Institute of Information Engineering Xi an Jiaotong University Xi an 710049 China |
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| Abstract: | In this paper , the method for designing digital filters and their implementation and application via filter banks are introduced. The design of digital Hilbert filters of each scale in dyadic wavelet filter banks is particularly discussed. Moreover, this method, which based on multiscale Hilbert filtering methods, is applied to the extraction of the instantaneous frequency and obtains a better denoising result compared with the traditional DWT denoising method. |
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| Keywords: | Dyadic wavelet transform Digital Hilbert filter Multiscale |
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