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Geoscientific Instrumentation, Methods and Data Systems An interactive open-access journal of the European Geosciences Union
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Volume 7, issue 3 | Copyright
Geosci. Instrum. Method. Data Syst., 7, 209-221, 2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 25 Jul 2018

Research article | 25 Jul 2018

The development and test research of a multichannel synchronous transient electromagnetic receiver

Fanqiang Lin1,2, Xuben Wang2,3, Kecheng Chen1, Depan Hu4, Song Gao1, Xue Zou1, and Cai Zeng1 Fanqiang Lin et al.
  • 1College of Information Science and Technology, Chengdu University of Technology, Chengdu 610059, China
  • 2College of Geophysics, Chengdu University of Technology, Chengdu 610059, China
  • 3Key Lab of Earth Exploration and Information Technique of Ministry of Education, Chengdu 610059, China
  • 4Geoenvironment Monitoring Institute in Chengdu, Chengdu 610071, China

Abstract. As a result of the drastic reduction in shallow mineral resources, the exploitable potential and reserves of proven mines are insufficient, and the mineral resources in deep ground need to be more explored in a more refined way. There are some disadvantages of the existing instruments, such as few channels and slow sampling rate. Therefore, a multiparameter transient electromagnetic instrument with synchronous receiving has been developed and tested. The instrument is composed of two controllers – embedded controller and programmable logic controller – which can provide a diversified information combination for follow-up information processing. Under the grounding electrode source emission mode, the real-time synchronous transient electromagnetic acquisition system of six channels is achieved with a sampling rate of 128000 samples per second (SPS). The data acquired by the six channels is recorded in the full-time range of the time domain. Furthermore, experiments were carried out in the laboratory, open areas, and actual mine. Through data analysis, the measured data curves of the mining area are highly consistent with the existing geochemical exploration curves and geological profile.

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Short summary
The main purpose of this paper is to introduce a receiver system for the synchronous acquisition of multiple electromagnetic signals in transient electromagnetic prospecting to achieve multiparameter and multichannel synchronous reception. The reliability, practicability, and data validity of the receiver were verified by different kinds of testing. It can be used for the reception of pseudorandom signals and distributed 3-D data, which can improve geophysical exploration efficiency.
The main purpose of this paper is to introduce a receiver system for the synchronous acquisition...