| EMD方法在长周期大地电磁测深资料去噪中的应用 |
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| 引用本文： | 覃庆炎,王绪本,罗威.EMD方法在长周期大地电磁测深资料去噪中的应用[J].物探与化探,2011,35(1):113-117. |
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| 作者姓名： | 覃庆炎 王绪本 罗威 |
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| 作者单位： | 成都理工大学信息工程学院,四川,成都,610059 |
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| 基金项目： | 国家自然科学基金项目(40839909) |
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| 摘 要： | 在电磁干扰大的地区进行长周期大地电磁测量，如何有效地抑制各种电磁噪声，提高信噪比，从而保证数据质量，是长周期大地电磁资料采集与处理的核心问题。针对长周期大地电磁信号具有非线性、非平稳和非最小相位的特点，提出了利用经验模态分解(EMD)方法对长周期大地电磁信号进行噪声压制。讨论了EMD算法的具体实现流程，并将该算法应用于长周期大地电磁信号的噪声压制。实际应用结果表明，该方法可以有效地压制长周期大地电磁中的噪声。
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| 关 键 词： | 长周期大地电磁测深 经验模态分解（EMD） 噪声压制 信号分析 |
| 收稿时间： | 2010-02-10 |
THE APPLICATION OF THE EMD METHOD TO LONG-ERIOD MAGNETOTELLURIC SOUNDING DATA DENOISING |
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| QIN Qing-yan,WANG Xu-ben,LUO Wei.THE APPLICATION OF THE EMD METHOD TO LONG-ERIOD MAGNETOTELLURIC SOUNDING DATA DENOISING[J].Geophysical and Geochemical Exploration,2011,35(1):113-117. |
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| Authors: | QIN Qing-yan WANG Xu-ben LUO Wei |
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| Institution: | QIN Qing-yan,WANG Xu-ben,LUO Wei(Department of Information and Engineering,Chengdu University of Technology,Chengdu 610059,China) |
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| Abstract: | In long-eriod magnetotelluric sounding measurement in the noisy area,the effective suppression of a variety of electromagnetic noises and the improvement of the quality of data constitute the core problem in long period magnetotelluric sounding data acquisition and data processing.As the long-eriod magnetotelluric sounding data are characterized by nonlinear,non-tationary and non-inimum phase,in this paper the authors propose the EMD method to suppress the noise in long-eriod magnetotelluric signals,and dea... |
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| Keywords: | long-eriod magnetotelluric sounding EMD signal denoising signal analysis |
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