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Distributed wind measurements with multiple quadrotor unmanned aerial vehicles in the atmospheric boundary layer

Wetz, Tamino and Wildmann, Norman and Beyrich, Frank (2021) Distributed wind measurements with multiple quadrotor unmanned aerial vehicles in the atmospheric boundary layer. Atmospheric Measurement Techniques, 14 (5), pp. 3795-3814. Copernicus Publications. doi: 10.5194/amt-14-3795-2021. ISSN 1867-1381.

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Official URL: https://doi.org/10.5194/amt-14-3795-2021

Abstract

In this study, a fleet of quadrotor unmanned aerial vehicles (UAVs) is presented as a system to measure the spatial distribution of atmospheric boundary layer flow. The big advantage of this approach is that multiple and flexible measurement points in space can be sampled synchronously. The algorithm to obtain horizontal wind speed and direction is designed for hovering flight phases and is based on the principle of aerodynamic drag and the related quadrotor dynamics. During the FESST@MOL campaign at the boundary layer field site (Grenzschichtmessfeld, GM) Falkenberg of the Lindenberg Meteorological Observatory - Richard Assmann Observatory (MOL-RAO), 76 calibration and validation flights were performed. The 99 m tower equipped with cup and sonic anemometers at the site is used as the reference for the calibration of the wind measurements. The validation with an independent dataset against the tower anemometers reveals that an average accuracy of <0.3 m/s for the wind speed and <8° for the wind direction was achieved. Furthermore, we compare the spatial distribution of wind measurements with the fleet of quadrotors to the tower vertical profiles and Doppler wind lidar scans. We show that the observed shear in the vertical profiles matches well with the tower and the fluctuations on short timescales agree between the systems. Flow structures that appear in the time series of a line-of-sight measurement and a two-dimensional vertical scan of the lidar can be observed with the fleet of quadrotors and are even sampled with a higher resolution than the deployed lidar can provide.

Item URL in elib:https://elib.dlr.de/142547/
Document Type:Article
Title:Distributed wind measurements with multiple quadrotor unmanned aerial vehicles in the atmospheric boundary layer
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Wetz, TaminoDLR, IPAUNSPECIFIED
Wildmann, NormanDLR, IPAhttps://orcid.org/0000-0001-9475-4206
Beyrich, FrankGerman Weather Service, Met. Observatory LindenbergUNSPECIFIED
Date:26 May 2021
Journal or Publication Title:Atmospheric Measurement Techniques
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:14
DOI :10.5194/amt-14-3795-2021
Page Range:pp. 3795-3814
Publisher:Copernicus Publications
ISSN:1867-1381
Status:Published
Keywords:Windmessung, Atmosphärische Grenzschicht, UAS
HGF - Research field:Energy
HGF - Program:Materials and Technologies for the Energy Transition
HGF - Program Themes:Photovoltaics and Wind Energy
DLR - Research area:Energy
DLR - Program:E SW - Solar and Wind Energy
DLR - Research theme (Project):E - Wind Energy
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Transport Meteorology
Deposited By: Wetz, Tamino
Deposited On:31 May 2021 14:39
Last Modified:31 May 2021 14:39

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