航空广域电磁法初步探索

doi:10.11720/wtyht.2020.0196

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Abstract

Based on the basic theory of wide-field electromagnetic method (WFEM) and combined with the current problems of resource exploration and the development status of aviation geophysical prospecting, the authors mainly deal with the aviation wide-area electromagnetic method in three main aspects as a preliminary exploration: basic theory, equipment research and application testing. It is held that the quality of aviation wide-area electromagnetic data collection is susceptible to aircraft flight attitude and aircraft body noise, and high frequency bands greater than 100 Hz have better data quality and practical engineering application feasibility.

Key words： WFEM aerogeophysical prospecting exploration

Received: 22 April 2020 Published: 26 October 2020

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	Articles by authors
	Yong-Bing WANG
	Wen-Bin YIN
	Lei ZHANG

Cite this article:

Yong-Bing WANG,Wen-Bin YIN,Lei ZHANG. A preliminary exploration of the wide field electromagnetic method in aerogeophysical prospecting[J]. Geophysical and Geochemical Exploration, 2020, 44(5): 1059-1065.

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https://www.wutanyuhuatan.com/EN/10.11720/wtyht.2020.0196 OR https://www.wutanyuhuatan.com/EN/Y2020/V44/I5/1059

Schematic diagram of AWFEM

WFEM transmission system of 180 kW

Single component receiver based on aviation-WFEM

DJI M600Pro drone

The product example of magnetic rod, coil and fluxgate

Connection of receiver, coil and drone

Connection of receiver, magnetic rod and drone (soft connection)

Connection of receiver, magnetic rod and drone (hard connection)

Comparison of the signal curve of the three main frequency components of the hard connectionbetween the magnetic rod and the drone

Comparison of the signal curve of the three main frequency components of the soft connection between the magnetic rod and the drone

Environmental background field noise

Comparison of signal curves of various main frequency components of magnetic rods at different distances from the drone

The relative deviation of the measured data of the aircraft relative to the magnetic rod at different distances

Comparison of signal curves of various main frequency components at different altitudes of the drone

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