| 一种基于小波模极大值的信号去噪算法 |
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| 引用本文： | 王和平,康景利.一种基于小波模极大值的信号去噪算法[J].系统工程与电子技术,2005,27(11):1876-1877. |
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| 作者姓名： | 王和平 康景利 |
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| 作者单位： | 北京理工大学机电工程学院,北京,100081 |
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| 摘 要： | 研究了小波变换中噪声和信号的次要的模量极大值曲线对定位信号特征点造成干扰的问题,提出一种基于小波模阈值和模极大值曲线长度阈值的去噪算法,并把该算法与传统小波阈值去噪算法进行了对比。仿真结果表明,该算法可以明显地去掉噪声和信号中次要的模极大值曲线,保留信号主要的模极大值曲线,在定位信号特征点上优于小波阈值去噪算法。
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| 关 键 词： | 小波变换 模极大值 去噪 |
| 文章编号： | 1001-506X(2005)11-1876-02 |
| 修稿时间： | 2004年8月10日 |
De-noising method based on wavelet transform modulus maximum |
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| WANG He-ping,KANG Jing-li.De-noising method based on wavelet transform modulus maximum[J].System Engineering and Electronics,2005,27(11):1876-1877. |
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| Authors: | WANG He-ping KANG Jing-li |
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| Abstract: | Based on the theory of wavelet transform modulus maximum,the influence made by noise and(signal's) minor modulus maximum is discussed.A de-noising method based on wavelet transform modulus threshold and modulus maximum length threshold is proposed,and its de-noising effect is compared with the traditional wavelet de-noising method.The simulation results indicate that the modulus maximum made by noise are filtered,the primary modulus maximum of signal are kept,and its effect is better than the traditional wavelet threshold de-noising method. |
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| Keywords: | wavelet transform modulus maximum de-noising |
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