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Development and Test of a Fringe-Imaging Direct-Detection Doppler Wind Lidar for Aeronautics

Vrancken, Patrick and Herbst, Jonas (2019) Development and Test of a Fringe-Imaging Direct-Detection Doppler Wind Lidar for Aeronautics. In: EPJ Web of Conferences, pp. 1-4. 29th International Laser Radar Conference, 24. - 28. Jun. 2019, Hefei, Volksrepublik China. (Submitted)

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Abstract

DLR currently investigates the use of Doppler wind lidar as sensor within feedforward gust alleviation control loops on fast-flying fixed-wing aircraft. Such a scheme imposes strong requirements on the lidar system such as sub-m/s precision, high rate, high spatial resolution, close measurement ranges and sensitivity to mixed and pure molecular backscatter. We report on the development of a novel direct- detection Doppler wind lidar (DD-DWL) within these requirements. This DD-DWL is based on fringe-imaging of the Doppler-shifted backscatter of UV laser pulses in a field-widened Michelson interferometer using a fast linear photodetector. A prototype for airborne operation has been ground-tested in early 2018 against a commercial coherent DWL, demonstrating its ability of measuring close-range wind speeds with a precision of 0.5 m/s, independent of the actual wind speed.

Item URL in elib:https://elib.dlr.de/123605/
Document Type:Conference or Workshop Item (Speech)
Title:Development and Test of a Fringe-Imaging Direct-Detection Doppler Wind Lidar for Aeronautics
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Vrancken, PatrickDLR, IPAhttps://orcid.org/0000-0003-2364-5576
Herbst, JonasDLR, IPAUNSPECIFIED
Date:2019
Journal or Publication Title:EPJ Web of Conferences
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:No
Page Range:pp. 1-4
Status:Submitted
Keywords:LIDAR; Doppler Wind Lidar, Wind; Turbulence; Direct Detection Interferometer; Michelson
Event Title:29th International Laser Radar Conference
Event Location:Hefei, Volksrepublik China
Event Type:international Conference
Event Dates:24. - 28. Jun. 2019
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:air traffic management and operations
DLR - Research area:Aeronautics
DLR - Program:L AO - Air Traffic Management and Operation
DLR - Research theme (Project):L - Climate, Weather and Environment
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Lidar
Deposited By: Vrancken, Dr. Patrick
Deposited On:26 Nov 2018 11:29
Last Modified:31 Jul 2019 20:21

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