Electromagnetic Antenna Based on Transmit-receive Crossing Coil

Electromagnetic Antenna Based on Transmit-receive Crossing Coil

Jun Zhang  Yangcheng Xu Yunbo Li  Fenghao Yang  Yanqing Wu 

Chongqing Research Institute of China Coal Technology & Engineering Group Corporation, Chongqing 400039, China

School of Geosciences and Info-physics, Central South University, Changsha 410083, China

Department of Mathematics and Statistics, York University, Toronto M3J1P3, Canada

Corresponding Author Email: 
25 April 2017
28 May 2017
30 June 2017
| Citation



The small multiturn overlapping coil is always used in mine transient electromagnetic exploration. For the effect of turn-off, the first field dominates total field during the off-time of transmitting current and early after off-time. This may cause unresponsive for shallow low resistance anomaly. So we suggest that use cross coil for first field eliminating: Analyzes  the distribution of first field inside and outside the transmitting coil during the off-time; Deduces the analytic expression of magnetic flow for first field inside the receiving coil; Worked out the coefficient of position for receiving coil is 0.93 when the magnetic flow for first field inside the receiving coil is 0. According to laboratory experiment for low resistance model and site detecting for tunnel filled with water, we verify the availability of cross coil for first field eliminating and low resistance anomaly detecting. It provides technical support to mine transient electromagnetic exploration.


mine transient electromagnetic, antenna, first field eliminating, transmit-receive crossing coil.

1. Introduction
2. Principle
3. Determining the Positions of the Receiving and Transmitting Antennas
4. The Measured Attenuation Curve
5. Conclusion

The project is supported by National Science and Technology Major Project of the Ministry of Science and Technology of China (Grant No. 2016ZX05045-002-0003 and 2016ZX05045004-007).


1. J. Lin, L. Wang, X. Wang, M. Cao, L. Fu, X. Shang, Research and development on the air-core coil sensor for mine transient electromagnetic exploration, 2016, Chinese Journal of Geophysics, vol. 59, no. 2, pp. 721-730.

2. J.L. Cheng, D. Chen, G.Q. Xue, H. Qiu, X.T. Zhou, Synthetic aperture imaging in advanced detection of roadway using the mine transient electromagnetic method, 2016, Chinese Journal of Geophysics, vol. 59, no. 2, pp. 731-738.

3. D.H. Bai, M. Maxwell, The effect of two types of turn-off current on tem responses and the correction techniques, 2001, Seismology and Geology, vol. 23, no. 2, pp. 245-251.

4. Y.J. Ji, J. Lin, Z. Wang, S.B. Yu, J. Wang, Analysis of distortion in all-time transient electromagnetic filed based on inducing of ramp switch-off current for shallow survey, 2007, Chinese Journal of Radio Science, vol. 22, no. 2, pp. 316-320.

5. Y.J. Ji, J. Lin, Z. Wang, Analysis and numerical removing of distortion in transient electromagnetic receiver device for shallow sounding, 2007, Progress in Geophysics. vol. 22, no. 2, pp. 316-320.

6. Z.X. Liu, J.W. Wu, Theoretical research and application of blind area problem on mine transient electromagnetic method, 2011, The 10th China International Geo-Electromagnetic Workshop 2011, pp. 284-286.

7. S.L. Wang, Y.Z. Wang, Y.Y. Sui, Q. Wang, J. Lin, A bird calibration device of Helicopter-borne TEM with concentric bucking loop, 2011, Chinese Journal Geophys, vol. 54, no. 9, pp. 2397-2406.

8. M. Svllans, Quantitative interpretation of responses of Heliecopter-borne coneentric loop EM geophysical survey systems [Bachelor of Science], 2006.Ottawa, Ontario: Carleton University Earth Sciences.

9. S.J. Baleh, W.P. Boyko, N.R. Paterson, The AeroTEM airborne electromagnetic system, 2003, The Leading Edge, vol. 22, no. 6, pp. 562-566.

10. Y.C. Xu, J. Lin, S.Y. Li, X.S. Zhang, Y. Wang, Calculation of full-waveform airborne electromagnetic response with three-dimension finite-difference solution in time-domain, 2012, Chinese Journal Geophys, vol. 55, no. 6, pp. 2105-2114.

11. Z.L. Jiang, J.C. Yu, W.T. Sun, Study on mine transient electromagnetic method affected to full space response of low resistance body, 2012, Coal science and technology, vol. 40, no. 8, pp. 107-110.

12. Z.H. Jiang, J.H. Yue, S.C. Liu, Mine transient electromagnetic observation system of small multi-turn coincident configuration, 2007, Journal of China Coal Society, vol. 32, no. 11, pp. 1152-1156.