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地震 ›› 2009, Vol. 29 ›› Issue (2): 57-63.

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小波方法在地电场干扰处理中的分析研究

邱颖, 席继楼   

  1. 中国地震局地震预测研究所, 北京 100036
  • 收稿日期:2008-05-05 修回日期:2008-05-14 出版日期:2009-05-31 发布日期:2021-10-18
  • 作者简介:邱颖(1982-), 女, 河北保定人, 2005年在读硕士研究生, 主要从事地震地电观测方法和观测技术等研究。
  • 基金资助:
    中国地震局地震预测研究所基本科研业务专项(0207690220)

Research on Removing Noises in Geoelectric Field Observation Using Wavelet Transform

QIU Ying, XI Ji-lou   

  1. Institute of Earthqauke Science, CEA, Beijing 100036, China
  • Received:2008-05-05 Revised:2008-05-14 Online:2009-05-31 Published:2021-10-18

摘要: 该文在对地电场信号及地电阻率人工供电干扰信号的时频特征进行分析的基础上, 提出了小波域阈值滤波方法, 对地电场秒采样信号中叠加地电阻率人工供电干扰信号进行了分析和处理, 处理产生的误差在地电场观测的允许误差范围之内。

关键词: 地电场, 低电阻率, 供电干扰, 小波分析, 小波域阈值

Abstract: Based on the analysis of the characteristics of geoelectric field signals and artificial electricity signals in apparent resistivity measurements in time domain and frequency domain, a new method of wavelet domain threshold de-noising is proposed in this paper. This method was applied to processing the geoelectric field signals added by simulated artificial electricity signals in laboratory. It is showed that in the experiments this method has good performance and the filtering error is within the allowed range of geoelectric field observation.

Key words: Geoelectric field, Apparent resistivity, Artificial electric interference, Wavelet transform

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