2014
DOI: 10.1111/1365-2478.12122
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Transient electromagnetic modelling of an isolated wire loop over a conductive medium

Abstract: A large closed wire loop is generally used in field experiments for testing airborne electrical exploration equipment. Thus, methods are required for the precise calculation of an electromagnetic response in the presence of a closed wire loop. We develop a fast and precise scheme for calculating the transient response for such a closed loop laid out at the surface of a horizontally layered conductive ground. Our scheme is based on the relationship between the magnetic flux flowing through a closed loop and the… Show more

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Cited by 22 publications
(8 citation statements)
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“…Figure depicts three calibration models set up for simulation. Model 1 is derived from Air‐TEM in Kozhevnikov () and Persova (), Model 2 places the ACS horizontally above the ground, and Model 3 places the ACS vertically above the ground. Coil 1 represents the ACS under test with a radius of 0.11 m and 300 turns; Coil 2 represents the conductive loop with a radius of 1 m and time constant τb=140μnormals; Coil 3 represents the transmitter coil in Air‐TEM with a radius of 0.6 m and 12 turns.…”
Section: Simulation Resultsmentioning
confidence: 99%
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“…Figure depicts three calibration models set up for simulation. Model 1 is derived from Air‐TEM in Kozhevnikov () and Persova (), Model 2 places the ACS horizontally above the ground, and Model 3 places the ACS vertically above the ground. Coil 1 represents the ACS under test with a radius of 0.11 m and 300 turns; Coil 2 represents the conductive loop with a radius of 1 m and time constant τb=140μnormals; Coil 3 represents the transmitter coil in Air‐TEM with a radius of 0.6 m and 12 turns.…”
Section: Simulation Resultsmentioning
confidence: 99%
“…Air‐TEM equipment on‐site calibration system based on a conductive loop has been reported to achieve quantitative analysis of the transition process (Kozhevnikov ; Persova ). However, due to the existence of various undesired jitters, it is difficult to reconstruct uemf from uout by a functional relationship.…”
Section: Introductionmentioning
confidence: 99%
“…Вектор-потенциал p A  может быть рассчитан как аналитически (с использованием закона Био-Савара-Лапласа), так и численно в результате решения осесимметричной задачи [5,22]. Эквивалентная вариационная формулировка для уравнения (2) имеет вид…”
Section: математические модели и конечноэлементные аппроксимацииunclassified
“…Построе-ние таких сеток, в свою очередь, выполняется следующим образом. Сначала стро-ятся псевдорегулярные прямоугольные сетки в шаблонных координатах   , ,    с оптимизацией числа узлов (в результате чего в сетке появляются так называе-мые терминальные (висячие) узлы [5,17,[19][20][21][22]) по четырехэтапному алгоритму, который представлен в работе [17]. Затем выполняется их отображение в реаль-ные координаты с необходимыми деформациями с использованием функций…”
Section: математические модели и конечноэлементные аппроксимацииunclassified
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