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- Title
Development of a full-waveform voltage and current recording device for multichannel transient electromagnetic transmitters.
- Authors
Xinyue Zhang; Qisheng Zhang; Meng Wang; Qiang Kong; Shengquan Zhang; Ruihao He; Shenghui Liu; Shuhan Li; Zhenzhong Yuan
- Abstract
Due to the pressing demand for metallic ore exploration technology in China, several new technologies are being employed in the relevant exploration instruments. In addition to possessing the high resolution of the traditional transient electromagnetic method, high-efficiency measurements, and a short measurement time, the multichannel transient electromagnetic method (MTEM) technology can also sensitively determine the characteristics of a low-resistivity geologic body, without being affected by the terrain. Besides, the MTEM technology also solves the critical, existing interference problem in electrical exploration technology. This study develops a full-waveform voltage and current recording device for MTEM transmitters. After continuous acquisition and storage of the large, pseudo-random current signals emitted by the MTEM transmitter, these signals are then convoluted with the signals collected by the receiver to obtain the earth's impulse response. In this paper, the overall design of the full-waveform recording apparatus, including the hardware and upper-computer software designs, the software interface display and the results of field test, is discussed in detail.
- Subjects
ELECTROMAGNETIC devices; WAVE analysis; IMPULSE response; GEOMAGNETIC observatories; GEOMAGNETISM
- Publication
Geoscientific Instrumentation, Methods & Data Systems (GI), 2017, Vol 6, Issue 2, p495
- ISSN
2193-0856
- Publication type
Article
- DOI
10.5194/gi-6-495-2017