Lightweight TEM and VLF systems for low-altitude UAV-based geophysical

Parshin, A. Ya.; Davidenko, Y.; Yakovlev, Sergey; Vinokurov, V.; Bashkeev, A.S.

doi:10.3997/2214-4609.202120252

Cited by 3 publications

(4 citation statements)

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“…The measurements were conducted for several hours under adverse weather conditions, including a heavy snowstorm [https://youtu.be/rYpi5EfvVPQ (accessed on 6 November 2023)]. However, it was possible to collect data that were significantly better in quality than previous ones-our previous UAV-TEM system could measure transients down to 150 ns [2,8]. Due to the multiple increases in the frequency of samplings, up to 50 readings per second were now recorded.…”

Section: Resultsmentioning

confidence: 99%

“…The frequency domain EM has been used more, and technology and software for pre-processing and interpretation have developed much better [3][4][5]. Time domain UAV-airborne technologies is a new page of the EM survey, and only a few works are known from the literature so far [6], with the exception of articles by the authors [2,7,8].…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…However, we consider TEM more promising for the search for hidden mineral deposits at the depth range of between 100 and 500 m [8]. The first version of our instrument [2,8] has been used for geoelectric prospecting since 2020. Unfortunately, this instrument had a number of significant limitations: rather heavy sensors were used, which reduced the flight endurance time; the current switch could not provide the necessary pulse frequency to record-only two readings per second.…”

Section: Introductionmentioning

confidence: 99%

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Semi-Airborne UAV-TEM System Data Inversion with S-Plane Method—Case Study over Lake Baikal

Davidenko,

Hallbauer-Zadorozhnaya,

Bashkeev

et al. 2023

Remote Sensing

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The article presents the results of transient electromagnetic (TEM) prospecting surveys using an unmanned aerial system carried out at Lake Baikal, which is a unique geoelectrical setting where low-resistivity lacustrine sediments are located under a relatively isotropic water body. The task was to investigate the possibility of using a drone-based TEM survey to delineate the electrical stratigraphy of the subsurface at depths between 50 and 300 m, separated into layers and blocks. A new version of the SibGIS UAV-TEM unmanned system was used, significantly improved compared to the prototype previously described in the literature. The current switch providing bipolar current pulses connected to a grounded electrical line was the source of the electromagnetic field in the geological environment. The hexacopter carrying a measuring system consisting of 18-bit ADC and sensor—analog of 50 × 50 loop, was the receiving system. We measured survey data of 16 traverses over the Baikal going from the shore to the depths. Significant attention is being paid to a new approach to data inversion. For fast interpretation of the TEM data, we used the Sτ-method, which allows for tracing the change in the apparent longitudinal conductivity with depth. It is shown that thanks to the new sensor and current switch, the data quality has increased significantly; now, the UAV system can register sounding curves up to 1 ms. As a result, new data on the geological structure of the shelf zone of Lake Baikal were obtained. They had a good fundamental agreement with the predecessor data obtained from terrestrial measurements (from ice cover), allowing us to conclude that the UAV-TEM technology can already replace conventional ground-based electromagnetic surveys.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Semi-Airborne UAV-TEM System Data Inversion with S-Plane Method—Case Study over Lake Baikal

Davidenko,

Hallbauer-Zadorozhnaya,

Bashkeev

et al. 2023

Remote Sensing

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Comparative Analysis of Airborne Electrical Prospecting Technologies Using Helicopter Platforms and UAVs when Searching for Kimberlite Pipes

Soloveichik,

Persova,

Sivenkova

et al. 2023

2023 IEEE XVI International Scientific and Technical Conference Actual Problems of Electronic Instrument Engineering (APEIE)

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Unmanned Aerial Geophysical Remote Sensing: A Systematic Review

Dadrass Javan,

Samadzadegan,

Toosi

et al. 2024

Remote Sensing

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Geophysical surveys, a means of analyzing the Earth and its environments, have traditionally relied on ground-based methodologies. However, up-to-date approaches encompass remote sensing (RS) techniques, employing both spaceborne and airborne platforms. The emergence of Unmanned Aerial Vehicles (UAVs) has notably catalyzed interest in UAV-borne geophysical RS. The objective of this study is to comprehensively review the state-of-the-art UAV-based geophysical methods, encompassing magnetometry, gravimetry, gamma-ray spectrometry/radiometry, electromagnetic (EM) surveys, ground penetrating radar (GPR), traditional UAV RS methods (i.e., photogrammetry and LiDARgrammetry), and integrated approaches. Each method is scrutinized concerning essential aspects such as sensors, platforms, challenges, applications, etc. Drawing upon an extensive systematic review of over 435 scholarly works, our analysis reveals the versatility of these systems, which ranges from geophysical development to applications over various geoscientific domains. Among the UAV platforms, rotary-wing multirotors were the most used (64%), followed by fixed-wing UAVs (27%). Unmanned helicopters and airships comprise the remaining 9%. In terms of sensors and methods, imaging-based methods and magnetometry were the most prevalent, which accounted for 35% and 27% of the research, respectively. Other methods had a more balanced representation (6–11%). From an application perspective, the primary use of UAVs in geoscience included soil mapping (19.6%), landslide/subsidence mapping (17.2%), and near-surface object detection (13.5%). The reviewed studies consistently highlight the advantages of UAV RS in geophysical surveys. UAV geophysical RS effectively balances the benefits of ground-based and traditional RS methods regarding cost, resolution, accuracy, and other factors. Integrating multiple sensors on a single platform and fusion of multi-source data enhance efficiency in geoscientific analysis. However, implementing geophysical methods on UAVs poses challenges, prompting ongoing research and development efforts worldwide to find optimal solutions from both hardware and software perspectives.

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Lightweight TEM and VLF systems for low-altitude UAV-based geophysical

Cited by 3 publications

References 0 publications

Semi-Airborne UAV-TEM System Data Inversion with S-Plane Method—Case Study over Lake Baikal

Semi-Airborne UAV-TEM System Data Inversion with S-Plane Method—Case Study over Lake Baikal

Comparative Analysis of Airborne Electrical Prospecting Technologies Using Helicopter Platforms and UAVs when Searching for Kimberlite Pipes

Unmanned Aerial Geophysical Remote Sensing: A Systematic Review

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