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Comparison of wake-vortex parameters measured by pulsed and continuous-wave lidars

Köpp, Friedrich and Rahm, Stephan and Smalikho, Igor and Dolfi, Agnès and Cariou, Jean-Pierre and Harris, Michael and Young, Robert I. (2005) Comparison of wake-vortex parameters measured by pulsed and continuous-wave lidars. Journal of Aircraft, 42, pp. 916-923.

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Official URL: http://www.aiaa.org/content.cfm?pageid=318

Abstract

Field trials carried out at Tarbes airfield in the summer of 2002 offered the unique opportunity to compare the results of simultaneous wake-vortex measurements by the 2-μm pulsed Doppler lidar from DLR, German Aerospace Research Center, and the 10-μm continuous wave (cw) Doppler lidars from ONERA and QinetiQ. The discrepancies in vortex core position obtained from the data of the pulsed lidar and the cw lidars are 9 m for the vertical and 13 m for the horizontal co-ordinates. The accuracies of the vortex circulation measurements with the DLR and ONERA lidars are almost the same and equal 13 m2/s. This accuracy and the long-range capability of the pulsed lidar allows precise measurements over long periods from the moment of wake generation to a progressed state of vortex decay. Moreover, the influence of different atmospheric turbulence conditions and aircraft configurations on the wake-vortex circulation can be analyzed. This has been demonstrated out of ground effect under conditions of weak to moderate levels of turbulence.

Document Type:Article
Title:Comparison of wake-vortex parameters measured by pulsed and continuous-wave lidars
Authors:
AuthorsInstitution or Email of Authors
Köpp, FriedrichUNSPECIFIED
Rahm, StephanUNSPECIFIED
Smalikho, IgorUNSPECIFIED
Dolfi, AgnèsONERA, Palaiseau, F
Cariou, Jean-PierreONERA, Palaiseau, F
Harris, MichaelQinetiQ Malvern, Worcestershire, UK
Young, Robert I.QinetiQ Malvern, Worcestershire, UK
Date:July 2005
Journal or Publication Title:Journal of Aircraft
Volume:42
Page Range:pp. 916-923
Status:Published
Keywords:Aircraft, Wake vortices, Lidar
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:L VU - Air Traffic and Environment (old)
DLR - Research area:Aeronautics
DLR - Program:L VU - Air Traffic and Environment
DLR - Research theme (Project):L - Air Traffic and Weather (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Lidar
Deposited By: Friedrich Köpp
Deposited On:19 Mar 2007
Last Modified:12 Dec 2013 20:08

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