2018
DOI: 10.2478/jee-2018-0069
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Electromagnetic image of small UAV in very low frequency range

Abstract: The article deals with the measurement, visualization and analysis of the magnetic field in the 3D space around a small quadcopter. The measurements were realized in the very low frequency (VLF) range, since this range is interesting because of the possible detection of the drone also in the fully automated flight mode (without telemetry transmission). A measurement equipment/device that allows mapping of the magnetic field of the multirotor drone based on the sensor elevation and the copters azimuth was reali… Show more

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Cited by 7 publications
(5 citation statements)
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“…The tradeoff is that UAVs add unwanted noise to magnetic field measurements. Similar papers on UAV noise mitigation for indoor magnetic fields use a 40 cm boom to reduce noise and then carefully characterize any remaining noise sources [6,7]. Here, we analyze measured magnetic variation against separation distances of 2cm-8cm and show that adjustments to motor commands can reduce UAV-induced magnetic noise.…”
Section: Related Workmentioning
confidence: 88%
See 1 more Smart Citation
“…The tradeoff is that UAVs add unwanted noise to magnetic field measurements. Similar papers on UAV noise mitigation for indoor magnetic fields use a 40 cm boom to reduce noise and then carefully characterize any remaining noise sources [6,7]. Here, we analyze measured magnetic variation against separation distances of 2cm-8cm and show that adjustments to motor commands can reduce UAV-induced magnetic noise.…”
Section: Related Workmentioning
confidence: 88%
“…However, the electronics on robots create magnetic noise that reduces map accuracy. Some avoid this electromagnetic noise by separating the magnetometer from other electronics [5,6] or characterizing the vehicle's noise [7]. In this work, we present new tools to create indoor magnetic field maps using an unmanned aerial vehicle (UAV) while mitigating UAV-induced magnetic noise.…”
Section: Introductionmentioning
confidence: 99%
“…One of the tasks that had to be completed was the reduction of the influence of the interfering magnetic fields created by the motors on the measurements. Based on the knowledge and experience obtained during the research focusing on UAV detection using magnetic sensors [ 49 ], an extended landing fixture with the length of 40 cm was designed and created using the 3D printing technique. This fixture allowed the magnetic sensors to be placed on the bottom, whereas the electronic sensors were placed just under the UAV.…”
Section: Methodsmentioning
confidence: 99%
“…The calibration process was performed with the VEMA magnetometer mounted in-place, and although the UAV construction was created mostly from non-magnetic materials, some parts still contained ferromagnetic components that could cause offsets. Precautions were also made based on the previous investigation of possible interference from the UAV propulsion system [ 49 ]; therefore, the sensors were distanced from the UAV on the fixture at the experimentally determined distance.…”
Section: Methodsmentioning
confidence: 99%
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