| 基于小波变换模极大值去噪方法的改进 |
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| 引用本文： | 张兆宁,董肖红,潘云峰.基于小波变换模极大值去噪方法的改进[J].电力系统及其自动化学报,2005,17(2):9-12. |
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| 作者姓名： | 张兆宁 董肖红 潘云峰 |
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| 作者单位： | 中国民航学院空管学院,天津,300300;山东鲁泰环中制药有限公司,淄博,255086 |
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| 摘 要： | 由Mallat的极大值去噪算法出发，与利用尺度间小波变换相似系数的阈值去噪方法结合，提出了一种新的改进去噪算法。该方法克服了模极大值法在信号重构方面计算复杂，重构信号产生偏差的缺陷。通过对局放信号的去噪仿真计算，证明了该方法运算简单，适合局放信号的处理，处理后的局放信号不失真，剔除噪声效果好。
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| 关 键 词： | 小波变换 模极大值 阈值法 去噪 局部放电 |
| 文章编号： | 1003-8930(2005)02-0009-04 |
Improved Algorithm Based on Modular Maximum Denosing Method by Wavelet Transformation |
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| ZHANG Zhao-ning,DONG Xiao-hong,PAN Yun-feng.Improved Algorithm Based on Modular Maximum Denosing Method by Wavelet Transformation[J].Proceedings of the CSU-EPSA,2005,17(2):9-12. |
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| Authors: | ZHANG Zhao-ning DONG Xiao-hong PAN Yun-feng |
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| Abstract: | This paper introduces a new denosing algorithm based on Mallat's local maximum denosing algorithm. It combines the threshold method using similarity coefficients of the wavelet transform with scales and modular maximum algorithm, and it overcomes the disadvantage of calculation complexity and reconstruction deviation of revaluate signal in local maximum denosing algorithm. The simulation shows that the denosing method is very effective. |
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| Keywords: | wavelet transform local maximum thresholding denosing partial discharge |
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