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dc.contributor.authorKelberlau, Felix
dc.contributor.authorNeshaug, Vegar
dc.contributor.authorLønseth, Lasse
dc.contributor.authorBracchi, Tania
dc.contributor.authorMann, Jakob
dc.date.accessioned2020-03-27T09:47:05Z
dc.date.available2020-03-27T09:47:05Z
dc.date.created2020-03-10T19:03:21Z
dc.date.issued2020
dc.identifier.citationRemote Sensing. 2020, 12 (5)en_US
dc.identifier.issn2072-4292
dc.identifier.urihttps://hdl.handle.net/11250/2649049
dc.description.abstractDue to their motion, floating wind lidars overestimate turbulence intensity ( TI ) compared to fixed lidars. We show how the motion of a floating continuous-wave velocity–azimuth display (VAD) scanning lidar in all six degrees of freedom influences the TI estimates, and present a method to compensate for it. The approach presented here uses line-of-sight measurements of the lidar and high-frequency motion data. The compensation algorithm takes into account the changing radial velocity, scanning geometry, and measurement height of the lidar beam as the lidar moves and rotates. It also incorporates a strategy to synchronize lidar and motion data. We test this method with measurement data from a ZX300 mounted on a Fugro SEAWATCH Wind LiDAR Buoy deployed offshore and compare its TI estimates with and without motion compensation to measurements taken by a fixed land-based reference wind lidar of the same type located nearby. Results show that the TI values of the floating lidar without motion compensation are around 50% higher than the reference values. The motion compensation algorithm detects the amount of motion-induced TI and removes it from the measurement data successfully. Motion compensation leads to good agreement between the TI estimates of floating and fixed lidar under all investigated wind conditions and sea states.en_US
dc.language.isoengen_US
dc.publisherMDPIen_US
dc.rightsNavngivelse 4.0 Internasjonal*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/deed.no*
dc.titleTaking the Motion out of Floating Lidar: Turbulence Intensity Estimates with a Continuous-Wave Wind Lidaren_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.description.versionpublishedVersionen_US
dc.source.volume12en_US
dc.source.journalRemote Sensingen_US
dc.source.issue5en_US
dc.identifier.doi10.3390/rs12050898
dc.identifier.cristin1801005
dc.description.localcodeThis is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly citeden_US
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode1


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