Magnetic Surveys With Unmanned Aerial Systems: Software for Assessing and Comparing the Accuracy of Different Sensor Systems, Suspension Designs and Compensation Methods

Kaub, Leon; Keller, Gordon; Bouligand, C.; Glen, Jonathan M.G.

doi:10.1029/2021gc009745

Cited by 14 publications

(5 citation statements)

References 34 publications

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“…It provides magnetic field measurements that can resolve very small temporal changes (<10 nT). This is higher than common aeromagnetic survey using both fluxgate and scalar magnetometers that usually provide accuracy lower than 2 nT [Coyle et al 2014;Gavazzi et al 2019;Kaub et al 2021].…”

Section: Uav Sensors and Data Acquisitionmentioning

confidence: 83%

Active structures and thermal state of the Piton de la Fournaise summit revealed by combined UAV magnetic and thermal infrared measurements

et al. 2022

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In this study, we demonstrate the strong potential of combining Unmanned Aerial Vehicle (UAV)-based thermal infrared (IR) and magnetic measurements to image the thermal state of volcanic edifices, as well as the distribution of active volcano-tectonic features at depth. Since magnetization is strongly dependent on temperature and alteration, thermally active structures are also associated with a decrease in magnetization. Based on the analysis of recent combined magnetic and infrared acquisitions, we focus on the recent evolution of the summit activity at Piton de la Fournaise. The comparison clearly highlights zones of major thermal activity, alteration and high permeability, and potentially areas of low mechanical resistance. Those observations provide information on preferential pathways for future activity, and also provide constraints on fluid transfer, diffusion, and cooling processes occurring within the volcano subsurface. Through reiterations, such combined UAV measurements are therefore particularly relevant in monitoring volcanic hazards before, during and after eruptions.

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Section: Uav Sensors and Data Acquisitionmentioning

confidence: 83%

Active structures and thermal state of the Piton de la Fournaise summit revealed by combined UAV magnetic and thermal infrared measurements

et al. 2022

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“…One common approach to mitigating these interfering local fields is to deploy the magnetometer arrays far from the UAV via a system of tethers. However, these tethers can cause additional complications when the UAV must traverse complex terrain or fly at low altitudes, and as a result more complex interference mitigation techniques must be utilized (Kaub et al, 2021). These complications are not limited to low-altitude unmanned aerial surveys, but also apply to higher-altitude manned aeromagnetic 240 surveying (Tuck et al, 2021).…”

Section: Level 2b -Cdf Conversionmentioning

confidence: 99%

Enabling In-Situ Magnetic Interference Mitigation Algorithm Validation via a Laboratory-Generated Dataset

Finley,

Flores,

Morris

et al. 2024

Preprint

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Abstract. Magnetometer measurements are one of the critical components necessary to improve our understanding of the intricate physical processes coupling mass, momentum, and energy within near-Earth space and throughout our solar system. However, these measurements are often contaminated by stray magnetic fields from the spacecraft hosting the magnetic field sensors, and the data often requires the application of interference mitigation algorithms prior to scientific use. Rigorous numerical validation of these techniques can be challenging when they are applied to in-situ spaceflight data, as a ground truth for the local magnetic field is often unavailable. This manuscript introduces and details the generation of an open-source dataset designed to facilitate the assessment of interference mitigation techniques for magnetic field data collected during spaceflight missions. The dataset contains over 100 hours of magnetic field data comprising mixtures of near-DC trends, physically-synthesized interference, and pseudo-geophysical phenomena. These constituent source signals have been independently captured by four synchronized magnetometers sampling at high cadence and combined into 30-minute intervals of data representative of events and interference seen in historic missions. The physical location of the four magnetometers relative to the interference sources enables researchers to test their interference mitigation algorithms with various magnetometer suite configurations, and the dataset also provides a ground truth for the underlying interference signals, enabling rigorous quantification of the results of past, present, and future interference mitigation efforts.

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“…[ 5 ] Various sensing technology solutions have been developed to monitor the health status of the aircraft, [ 6 ] including differential pressure sensing technology, [ 7 ] fiber optic sensing technology, [ 8 ] capacitive sensing technology, [ 9 ] and electromagnetic sensing technology. [ 10 ] However, these existing technologies have limitations such as complexity, [ 11 ] large size, [ 12 ] high cost, [ 13 ] susceptibility to external interference, [ 5b ] and the need for an external power supply, [ 14 ] making them challenging to integrate into VS condition monitoring applications. Therefore, new approaches are necessary to address these challenges.…”

Section: Introductionmentioning

confidence: 99%

Self‐Powered Digital Angle Sensor Based on Triboelectric Signal for Variable Structure of Aircraft

Sheng,

Cao,

et al. 2024

Adv Materials Technologies

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The rapid development of aircraft in recent years has attracted more attention, especially the issue of safe flight for aircraft. Some existing angle detection sensors are difficult to adapt to the development speed of the current aircraft due to the expensive price and large size, so there is an immediate need for new technology that can suit the current aircraft. Here, a self‐powered digital angle sensor that is compact, simple, and lightweight is introduced. This sensor eliminates the need for an external power supply and demonstrates highly sensitive signal detection at the volt level when the variable structure of the aircraft is working. The sensor is designed with a thickness of 7.3 mm, a volume of 16.6 cm3, and a weight of 9.85 g. Its lightweight and compact structure allows for seamless integration into aircraft without causing significant impact. The sensor not only provides real‐time monitoring the aircraft's variable structure deflection states, including deflection direction and angle but also alerts operators to any anomalies in deflection. Its small size and self‐powered capability make it an ideal solution for aircraft applications, enhancing safety and efficiency during flight.

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Magnetic Surveys With Unmanned Aerial Systems: Software for Assessing and Comparing the Accuracy of Different Sensor Systems, Suspension Designs and Compensation Methods

Abstract: Magnetic surveys have a wide range of applications in the geosciences, including the mitigation of earthquake and volcano hazard assessments (e.g.,

Cited by 14 publications

References 34 publications

Active structures and thermal state of the Piton de la Fournaise summit revealed by combined UAV magnetic and thermal infrared measurements

Active structures and thermal state of the Piton de la Fournaise summit revealed by combined UAV magnetic and thermal infrared measurements

Enabling In-Situ Magnetic Interference Mitigation Algorithm Validation via a Laboratory-Generated Dataset

Self‐Powered Digital Angle Sensor Based on Triboelectric Signal for Variable Structure of Aircraft

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