Volume 46 Issue 2
Apr.  2018
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CAO Xiaoling, YAN Liangjun, JIANG Tao. Application of blind source separation algorithm based on DWT-EEMD in removal of power line interference for MT[J]. COAL GEOLOGY & EXPLORATION, 2018, 46(2): 164-172. DOI: 10.3969/j.issn.1001-1986.2018.02.025
Citation: CAO Xiaoling, YAN Liangjun, JIANG Tao. Application of blind source separation algorithm based on DWT-EEMD in removal of power line interference for MT[J]. COAL GEOLOGY & EXPLORATION, 2018, 46(2): 164-172. DOI: 10.3969/j.issn.1001-1986.2018.02.025
shu

Application of blind source separation algorithm based on DWT-EEMD in removal of power line interference for MT

  • 1. Key Laboratory of Exploration Technologies for Oil and Gas Resources of the Ministry in Education, Yangtze University, Wuhan 430100, China;

  • 2. Hubei Cooperation Innovation Center of Unconventional Oil and Gas, Wuhan 430100, China;

  • 3. School of Information and Mathematics, Yangtze University, Jingzhou 434023, China

Funds: 

National Natural Science Foundation of China(41274082,U1562109)

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  • Received Date: June 11, 2017
  • Published Date: April 24, 2018
    Graphical Abstract
    • Abstract
  • The blind source separation algorithm based on DWT-EEMD used in noise elimination of power line interference for magnetotelluric is put forward in this paper. This method takes advantage of the excellent characteristics of DWT, EEMD and blind source separation, and adopts blind source separation to eliminate the noise after DWT and EEMD processing. The main advantage of this method lies in the DWT-EEMD model adopted and the introduction of the adaptive weighting factor, in reducing uncertainty of restored signal amplitude by independent component analysis algorithm at the same time, it has made the original signals still be well separated in condition of power frequency interference noise amplitude much higher than original signal amplitude. By the real magnetotelluric signal processing, it is showed that this method makes apparent resistivity curve and phase curve both become smooth and steady, and it better eliminates the power line interference noise in magnetotelluric signal.
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    • References (16)
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