DocumentCode :
2674060
Title :
Numerical simulation of a heterodyne Doppler LIDAR for wind measurement in a turbulent atmospheric boundary layer
Author :
Brousmiche, Sébastien ; Bricteux, Laurent ; Sobieski, Piotr ; Macq, Benoit ; Winckelmans, Grégoire
Author_Institution :
Univ. catholique de Louvain, Louvain-la-Neuve
fYear :
2007
fDate :
23-28 July 2007
Firstpage :
2783
Lastpage :
2786
Abstract :
This study concerns the modeling and the design of a monostatic heterodyne pulsed LIDAR. The heart of the system is constituted of a 1.55 mum able to produce high pulse repetition frequency. The aim of this work is to assess its efficiency to perform accurate wind speed measurements in the low atmospheric boundary layer, from a 2-D scanning pattern, in the presence of refractive turbulence. A complete LIDAR numerical simulation technique has been developed. Its main originality is the integration of both optical and fluid dynamics numerical methods to take into account the signal coherence loss due to refractive turbulence and speckle effect as well as the fine structures of the wind field. The wind speed profiles along each line-of-sight are retrieved from the return signal using a low-order autoregressive model. An adequate averaging model is then used estimate horizontal components of the wind speed for altitudes up to 150 m.
Keywords :
atmospheric boundary layer; atmospheric optics; atmospheric techniques; atmospheric turbulence; geophysical fluid dynamics; optical radar; wind; 2D scanning pattern; fluid dynamics numerical methods; heterodyne Doppler LIDAR; optical numerical methods; refractive turbulence; speckle effect; turbulent atmospheric boundary layer; wind measurement; Atmospheric measurements; Atmospheric modeling; Frequency; Heart; Laser radar; Numerical simulation; Optical refraction; Performance evaluation; Velocity measurement; Wind speed;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2007. IGARSS 2007. IEEE International
Conference_Location :
Barcelona
Print_ISBN :
978-1-4244-1211-2
Electronic_ISBN :
978-1-4244-1212-9
Type :
conf
DOI :
10.1109/IGARSS.2007.4423420
Filename :
4423420
Link To Document :
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