| 瞬态信号波形提取的子波变换方法 |
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| 引用本文： | 吴瑞芸 梅文博. 瞬态信号波形提取的子波变换方法[J]. 北京理工大学学报, 1996, 16(4): 424-429 |
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| 作者姓名： | 吴瑞芸 梅文博 |
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| 作者单位： | 北京理工大学电子工程系 |
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| 摘 要： | 提出了一种把子波变换与假设检验结合起来从噪声中提取有用瞬态信号波形的方法。先对瞬态信号加高斯噪声的混合信号进行离散子波变换得到了子波系数，根据假设检验理论确定门限，把子波系数与门限进行比较，如果子波第数大于门限，则保留这些子波系数，否则置为零。
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| 关 键 词： | 子波变换 信号提取 信号增强 信号检测 瞬态信号 |
Extraction of Transient Signal Waveforms Using Wavelet Transform |
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| Wu Ruiyun,Mei Wenbo,Zhou Siyong. Extraction of Transient Signal Waveforms Using Wavelet Transform[J]. Journal of Beijing Institute of Technology(Natural Science Edition), 1996, 16(4): 424-429 |
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| Authors: | Wu Ruiyun Mei Wenbo Zhou Siyong |
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| Abstract: | Proposes a new method for the extraction of transient signal waveforms from the noise using wavelet transform and hypothesis testing method.That is wavelet coefficients of mixed signal(signal plus noise) are first computed and the threshold set by hypothesis testing theory is determined.Secondly,wavelet coefficients are compared with the threshold.Those coefficients which are significant are kepe.Finally the inverse wavelet transformation of significant coefficients is performed to obtain the transient signal waveforms. |
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| Keywords: | wavelet transform signal extraction signal enhancement signal detection |
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