| 基于小波消噪的EMD模型在GPS振动信号处理中的应用 |
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| 引用本文： | 李旋,孙磊,骆辉,戴吾蛟,何伟.基于小波消噪的EMD模型在GPS振动信号处理中的应用[J].工程勘察,2011(3):72-76. |
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| 作者姓名： | 李旋 孙磊 骆辉 戴吾蛟 何伟 |
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| 作者单位： | 江苏省地质调查研究院;中南大学测绘与国土信息工程系; |
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| 摘 要： | 经验模式分解和小波分解是当前有效处理非平稳信号的两种时频分析方法,它们各具有其优缺点,适用于不同的应用.从对GPS振动信号的预处理、时域和频域处理入手,结果分析表明,对GPS振动信号先进行小波滤波消除随机噪声的干扰,再应用经验模式分解更有利于变形特征信息的分离和提取,提取的信号与振动平台记录数据更加吻合.
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| 关 键 词： | 经验模式分解(EMD) 小渡分解(WD) 全球定位系统 振动变形 |
Empirical mode decomposition based on wavelet de-noise in GPS vibration signal deformation analysis |
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| Li Xuan,Sun Lei,Luo Hui,Dai Wujiao,He Wei.Empirical mode decomposition based on wavelet de-noise in GPS vibration signal deformation analysis[J].Geotechnical Investigation & Surveying,2011(3):72-76. |
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| Authors: | Li Xuan Sun Lei Luo Hui Dai Wujiao He Wei |
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| Affiliation: | Li Xuan1,Sun Lei1,Luo Hui1,Dai Wujiao2,He Wei1(1.Geological Survey of Jiangsu Province,Nanjing 210018,China,2.Department of Survey Engineering and Geomatics,Central South University,Changsha 410083,China) |
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| Abstract: | Wavelet decomposition(WD) and empirical mode decomposition(EMD) are two new time-frequency analytic methods to analyze the non-stationary signals.Both methods had their own characteristics in non-stationary signal processing.From the analysis of real GPS deformation monitoring measurements of a vibration platform,it can be concluded that the EMD approach is a promising tool for deformation character extraction and deformation character detection,while the noise in GPS data can be eliminated by the wavelet t... |
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| Keywords: | empirical mode decomposition wavelet decomposition GPS vibration distortion |
| 本文献已被 CNKI 维普 等数据库收录！ |
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