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Article

Lightweight Unmanned Aerial System for Time-Domain Electromagnetic Prospecting—The Next Stage in Applied UAV-Geophysics

1
Siberian School of Geosciences, Irkutsk National Research Technical University, 664074 Irkutsk, Russia
2
SibGIS Tech LLC, 664074 Irkutsk, Russia
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Vinogradov Institute of Geochemistry SB RAS, 664033 Irkutsk, Russia
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Gelios LLC, 664074 Irkutsk, Russia
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Novosibirsk State Technical University, 630073 Novosibirsk, Russia
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Fedorovsky All-Russian Research Institute of Mineral Resources, 119017 Moscow, Russia
*
Author to whom correspondence should be addressed.
Academic Editor: Sunghun Jung
Appl. Sci. 2021, 11(5), 2060; https://doi.org/10.3390/app11052060
Received: 3 February 2021 / Revised: 21 February 2021 / Accepted: 22 February 2021 / Published: 26 February 2021
(This article belongs to the Special Issue Unmanned Aerial Vehicles (UAVs) II)
Nowadays in solving geological problems, the technologies of UAV-geophysics, primarily magnetic and gamma surveys, are being increasingly used. However, for the formation of the classical triad of airborne geophysics methods in the UAV version, there was not enough technology for UAV-electromagnetic sounding, which would allow studying the geological environment at depths of tens and hundreds of meters with high detail. This article describes apparently the first technology of UAV-electromagnetic sounding in the time domain (TDEM, TEM), implemented as an unmanned system based on a light multi-rotor UAV. A measuring system with an inductive sensor—an analogue of a 20 × 20 or 50 × 50 m receiving loop is towed by a UAV, and a galvanically grounded power transmitter is on the ground and connected to a pulse generator. The survey is carried out along a network of parallel lines at low altitude with a terrain draping at a speed of 7–8 m/s, the maximum distance of the UAV’s departure from the transmitter line can reach several kilometers, thus the created technology is optimal for performing detailed areal electromagnetic soundings in areas of several square kilometers. The results of the use of the unmanned system (UAS) in real conditions of the mountainous regions of Eastern Siberia are presented. Based on the obtained data, the sensitivity of the system was simulated and it was shown that the developed technology allows one to collect informative data and create geophysical sections and maps of electrical resistivity in various geological situations. According to the authors, the emergence of UAV-TEM systems in the near future will significantly affect the practice of geophysical work, as it was earlier with UAV-magnetic prospecting and gamma-ray survey. View Full-Text
Keywords: UAS; TDEM; TEM; electromagnetic prospecting; UAV; applied geophysics; remote sensing UAS; TDEM; TEM; electromagnetic prospecting; UAV; applied geophysics; remote sensing
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MDPI and ACS Style

Parshin, A.; Bashkeev, A.; Davidenko, Y.; Persova, M.; Iakovlev, S.; Bukhalov, S.; Grebenkin, N.; Tokareva, M. Lightweight Unmanned Aerial System for Time-Domain Electromagnetic Prospecting—The Next Stage in Applied UAV-Geophysics. Appl. Sci. 2021, 11, 2060. https://doi.org/10.3390/app11052060

AMA Style

Parshin A, Bashkeev A, Davidenko Y, Persova M, Iakovlev S, Bukhalov S, Grebenkin N, Tokareva M. Lightweight Unmanned Aerial System for Time-Domain Electromagnetic Prospecting—The Next Stage in Applied UAV-Geophysics. Applied Sciences. 2021; 11(5):2060. https://doi.org/10.3390/app11052060

Chicago/Turabian Style

Parshin, Alexander, Ayur Bashkeev, Yuriy Davidenko, Marina Persova, Sergey Iakovlev, Sergey Bukhalov, Nikolay Grebenkin, and Marina Tokareva. 2021. "Lightweight Unmanned Aerial System for Time-Domain Electromagnetic Prospecting—The Next Stage in Applied UAV-Geophysics" Applied Sciences 11, no. 5: 2060. https://doi.org/10.3390/app11052060

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