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

نویسندگان

چکیده

Nowadays in solving geological problems, the technologies of UAV-geophysics, primarily magnetic and gamma surveys, are being increasingly used. However, for formation classical triad airborne geophysics methods UAV version, there was not enough technology UAV-electromagnetic sounding, which would allow studying environment at depths tens hundreds meters with high detail. This article describes apparently first sounding time domain (TDEM, TEM), implemented as an unmanned system based on a light multi-rotor UAV. A measuring inductive sensor—an analogue 20 × or 50 m receiving loop is towed by UAV, galvanically grounded power transmitter ground connected to pulse generator. The survey carried out along network parallel lines low altitude terrain draping speed 7–8 m/s, maximum distance UAV’s departure from line can reach several kilometers, thus created optimal performing detailed areal electromagnetic soundings areas square kilometers. results use (UAS) real conditions mountainous regions Eastern Siberia presented. Based obtained data, sensitivity simulated it shown that developed allows one collect informative data create geophysical sections maps electrical resistivity various situations. According authors, emergence UAV-TEM systems near future will significantly affect practice work, earlier UAV-magnetic prospecting gamma-ray survey.

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ژورنال

عنوان ژورنال: Applied sciences

سال: 2021

ISSN: ['2076-3417']

DOI: https://doi.org/10.3390/app11052060