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Time-Domain Spectral Induced Polarization Based on Pseudo-random Sequence

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Abstract

To reduce noise during electrical prospecting, we hereby propose a new method using correlation identification technology and conventional electrical exploration devices. A correlation operation can be carried out with the transmitted pseudo-random sequence and received time signal to suppress the random noise, and the time-domain impulse response and frequency response of the frequency domain of the underground media can be obtained. At the same time, using a dual Cole–Cole model to fit a complex resistivity spectrum, which is close to the frequency response, we can get a variety of induced polarization parameters and electromagnetic parameters of subsurface, which can provide more useful information for the exploration of mineral resources. This time domain prospecting method can effectively improve the efficiency of the spectral induced polarization method. In this article, we have carried out theoretical calculations and a simulation to prove the feasibility of such a method.

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Acknowledgments

The research reported in this paper was funded by SinoProbe-01-01 (Experimental study of the continental standard grid of electromagnetic parameters). Special thanks are extended to the authors who made original contribution to the theory and application of pseudo-random sequence in electrical prospecting, e.g. Duncan P. M., Quincy E. A., Hobbs B., Ziolkowski A., Wright D., Prasad T. R. and Liu Jingxian, etc.

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Authors and Affiliations

  1. China University of Geosciences (Beijing), Beijing, 100083, China

    Mei Li, Wenbo Wei, Weibin Luo & Qindong Xu

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  1. Mei Li
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  2. Wenbo Wei
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  3. Weibin Luo
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  4. Qindong Xu
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Correspondence to Mei Li.

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Li, M., Wei, W., Luo, W. et al. Time-Domain Spectral Induced Polarization Based on Pseudo-random Sequence. Pure Appl. Geophys. 170, 2257–2262 (2013). https://doi.org/10.1007/s00024-012-0624-z

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  • DOI: https://doi.org/10.1007/s00024-012-0624-z

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