A TEM Based weak Signal Extraction Method of MRS Under Strong Noise in Tunnel

DOI

10.2991/iceeg-16.2016.12How to use a DOI?

Keywords

MRS, weak signal, TEM

Abstract

Underground magnetic resonance sounding (MRS) low signal-noise ratio (SNR) weak signal is hard to manage with traditional de-noising method such as fitting and filter. In view of this, this article makes use of both transient electromagnetic method (TEM) data and MRS data obtained from integrated detecting equipment. The goal is to extract weak MRS signal based on TEM under strong background noise. At first, underground electrical distribution can be acquired from TEM data, which is processed by equivalent conductive plane method. Then, the initial model of moisture content distribution was constructed on geological information and 3D MRS forwarding was made with finite element method. At last, the correlation coefficient series and deviations between forwarding data and measured data were calculated. The initial model would be corrected until the result is satisfying. Model calculation shows that this method can effectively extract the weak nuclear magnetic signals in tunnel under strong background noise

Copyright

© 2016, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Wei Zhao
AU  - Wentao Liu
AU  - Xiu Li
PY  - 2016/06
DA  - 2016/06
TI  - A TEM Based weak Signal Extraction Method of MRS Under Strong Noise in Tunnel
BT  - Proceedings of the 7th International Conference on Environment and Engineering Geophysics & Summit Forum of Chinese Academy of Engineering on Engineering Science and Technology
PB  - Atlantis Press
SP  - 42
EP  - 44
SN  - 2352-5401
UR  - https://doi.org/10.2991/iceeg-16.2016.12
DO  - 10.2991/iceeg-16.2016.12
ID  - Zhao2016/06
ER  -