无人机噪声对半航空瞬变电磁数据的影响分析

doi:10.11720/wtyht.2024.1544

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Abstract

As a semi-airbone transient electromagnetic (TEM) platform, drones inherently generate electromagnetic signals that may interfere with the collected transient electromagnetic data. This study investigated the impacts of drone noise on the collected data. Through outdoor experiments and systematic performance testing, this study analyzed the impacts of drone noise under varying rotor speeds, suspension lengths, flight height, and flight speeds. Accordingly, this study proposed methods for suppressing drone noise, such as determining the optimal suspension length and incorporating shielding layers. The study was conducted using the KWT-X8L-25 octocopter drones, but the research methodology and philosophy are also applicable to other drone models, thus serving as a reference for the selection of semi-airborne TEM platforms.

Key words： semi aviation transient electromagnetic drone noise flight altitude

Received: 19 December 2023 Published: 08 January 2025

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	Articles by authors
	Zhi-Hong WANG
	Nuo-Ya ZHANG
	Shan-Shan HU
	Zi-Qiang ZHENG
	Yu-Chao LIU
	Zheng ZHOU
	Huai-Feng SUN

Cite this article:

Zhi-Hong WANG,Nuo-Ya ZHANG,Shan-Shan HU, et al. Impacts of drone noise on semi-airborne transient electromagnetic data[J]. Geophysical and Geochemical Exploration, 2024, 48(6): 1633-1642.

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https://www.wutanyuhuatan.com/EN/10.11720/wtyht.2024.1544 OR https://www.wutanyuhuatan.com/EN/Y2024/V48/I6/1633

The main components of the SATEM receiving system

The receiver and the receiving coil

Specifications of receiving system

KWT-X8L-25 UAV

Specifications of KWT-X8L-25 UAV

Semi-airborne TEM receiving system integrated with UAV

The inner noise test results of the receiving system

Raw data (top) and spectrum (bottom) of environmental background noise

Raw data and spectrum at different speeds

Raw data (a) and its spectrum (b) of ground reference signal

Spectrum of received EM data with different hanging heights

High-frequency signal amplitudes of UAV with four kinds of hanging lengths

Geographical location of the studied area and survey design

Received raw EM data (left) and stacked results (right) at different flight altitudes

Receiving results in vertical hover mode

Received raw EM data (left) and stacked results (right) at different flight speeds

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