Study on circular loop source TEM with different solutions

DOI

10.2991/iceeg-16.2016.46How to use a DOI?

Keywords

circular loop source, inscribed polygon inner the circle, parameter combination, numerical calculation, inversion of layered medium

Abstract

The circular loop source is calculated by the method of inscribed polygon inner the circle or numerical calculation. The former uses decomposed polygon in each side with electric dipole, then stack all the electric dipole response; the latter adopts the method of digital filter to calculate the integral expression directly. There is some error between above methods and exact solutions in transient electromagnetic response values. This paper compares the two kinds of method. First, the equivalence of inscribed polygon is analyzed and the number of edges of the polygon, the proportion coefficient of transceiver distance and the length of the dipole are debated. Second, the contrast research in homogeneous half space with the two methods is carried on. Finally, layered medium is inversed by Artificial Bee Colony (ABC) algorithm and studying the fitting error. The results show that if inscribed polygon has few numbers of edges, the response error and fitting error calculated by the method of inscribed polygon inner the circle are higher than numerical calculation method in any conditions. But when the edge of inscribed polygon reach a certain number, the calculation accuracy is better than the numerical calculation method under a suitable parameter combination.

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  - Laifu Wen
AU  - Jiulong Cheng
AU  - Jizhe Jia
AU  - Jin Zhou
PY  - 2016/06
DA  - 2016/06
TI  - Study on circular loop source TEM with different solutions
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  - 168
EP  - 170
SN  - 2352-5401
UR  - https://doi.org/10.2991/iceeg-16.2016.46
DO  - 10.2991/iceeg-16.2016.46
ID  - Wen2016/06
ER  -