| 基于小波包变换的信号去噪方法研究 |
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| 引用本文： | 范显峰,姜兴渭.基于小波包变换的信号去噪方法研究[J].哈尔滨建筑大学学报,2003(7). |
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| 作者姓名： | 范显峰 姜兴渭 |
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| 作者单位： | 哈尔滨工业大学航天学院，哈尔滨工业大学航天学院 黑龙江 哈尔滨 150001，黑龙江 哈尔滨 150001 |
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| 基金项目： | 国家“十五”预研项目. |
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| 摘 要： | 为有效剔除信号噪声,得到没有污染的信号,便于进行信号分析,介绍了小波包变换的改进方法,给出了信号的小波包分解系数排序方法,将信号的相关性与小波包的多尺度时频分析及重构结合在一起,并用于信号的去噪研究中.通过仿真研究和与目前小波去噪方法进行对比,证明了该方法去噪的有效性.
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| 关 键 词： | 小波包变换 信号处理 噪声消除 |
Signal de-noise based on wavelet packets transform |
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| FAN Xian-feng JIANG Xing-wei School of Astronautics,Harbin Institute of Technology,Harbin ,China.Signal de-noise based on wavelet packets transform[J].Journal of Harbin University of Civil Engineering and Architecture,2003(7). |
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| Authors: | FAN Xian-feng JIANG Xing-wei School of Astronautics Harbin Institute of Technology Harbin China |
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| Affiliation: | FAN Xian-feng JIANG Xing-wei School of Astronautics,Harbin Institute of Technology,Harbin 150001,China |
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| Abstract: | In order to eliminate signal noise,an improved wavelet packets transform is introduced with wavelet packets decomposing coefficient array given,and relativity of signal,multi-scale time-frequency analysis and reconstructing are put together for de-noise study.This method is proved to be effective by a simulation exam- ple and comparison with recent de-noise using wavelet theory. |
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| Keywords: | wavelet packets transform signal analysis de-noise |
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