1.5 &amp;#x03BC;m all fiber pulsed lidar for wake vortex monitoring

Dolfi-Bouteyre, Agnès; Augère, Béatrice; Besson, Claudine; Canat, Guillaume; Fleury, Didier; Gaudo, T.; Goular, Didier; Lombard, Laurent; Planchat, Christophe; Valla, Matthieu; Cariou, Jean-Pierre; Petilon, O.; Lawson-Daku, J.

doi:10.1109/cleo.2008.4551273

Cited by 11 publications

(12 citation statements)

References 1 publication

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“…Both Doppler lidars were located on the roof of the Finnish Meteorological Institute (FMI) building located 4 km northeast of the city centre of Helsinki in Kumpula (60 12 0 12.9 00 N 24 57 0 38.1 00 E, 45 m above mean sea level, amsl). A Leosphere-Vaisala WindCube 400S Doppler lidar (Dolfi-Bouteyre et al, 2008;Thobois et al, 2018) performed sector scans above Helsinki city centre (Figure 1) and a Halo Photonics Stream Line scanning Doppler lidar (Pearson et al, 2009) measured the vertical profile of the horizontal wind above Kumpula.…”

Section: Doppler Lidar Observationsmentioning

confidence: 99%

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Evaluating modelled winds over an urban area using ground‐based Doppler lidar observations

Filioglou

Preißler²,

Troiville³

et al. 2022

Meteorological Applications

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Wind information in urban areas is essential for many applications related to air pollution, urban climate and planning, safety of drone-related operations, and assessment of urban wind energy potential. These applications require accurate wind forecasts, and obtaining this information in an urban environment is challenging as the morphology of a city varies from street to street, altering the wind flow. Remote sensing techniques such as Doppler lidars (light detection and ranging) provide a unique opportunity for wind forecast verification as they can provide both the vertical profile of the horizontal wind and the spatial variation in the horizontal domain at high resolution. In this study, the performance of numerical weather prediction (NWP) models, analysis systems, and large-eddy simulation (LES) models have been analysed by comparing the modelled winds against Doppler lidar observations under various atmospheric conditions and from season to season, in the coastal environment of Helsinki, Finland. The long-term mean vertical profile of the modelled horizontal wind shows good agreement with observations; the NWP model and the analysis systems selected here exhibit different strengths and weaknesses depending on the atmospheric conditions but no significant diurnal variation in performance. However, both the model and analysis systems show differences in their spatially-averaged bias when investigating different wind directions. LES verification shows that these models can potentially provide winds down to Associated post doc with Vaisala through PoDoCo program.

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Section: Doppler Lidar Observationsmentioning

confidence: 99%

“…The WindCube 400S Doppler lidar is a coherent pulsed hemispheric scanning system operating at a wavelength of 1.54 μm (Dolfi-Bouteyre et al, 2008). The instrument was deployed at Kumpula from 23 April 2020 to 19 October 2020 and scanned across the centre of Helsinki.…”

Section: Windcube 400s Doppler Lidarmentioning

confidence: 99%

Evaluating modelled winds over an urban area using ground‐based Doppler lidar observations

Filioglou

Preißler²,

Troiville³

et al. 2022

Meteorological Applications

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“…Switchable and tunable multi and dual-wavelength fiber lasers (DWFL) have attracted significant research interests recently due to their wide industrial applications, especially in the futuristic telecommunication industry, meteorology, automotive industry, remote sensing, LiDAR industry, and material processing related units. Such lasers have great potential and possibilities to be utilized in the implementation of futuristic 5G networks like a radio over fiber systems [1,2], free space optics [3,4], hybrid microwaveoptics systems [5], intelligent transport systems [6,7], satellite communication systems [8], LiDAR [9][10][11], and Terahertz (THz) radiation applications [12,13]. Moreover, DWFLs are playing a significant role in generating stable millimeter (mm) waves as compared to the conventional microwave signal generation techniques.…”

Section: Introductionmentioning

confidence: 99%

Phase-stable millimeter-wave generation using switchable dual-wavelength fiber laser

Kbashi

Sharma

Sergeyev

2021

Optics and Lasers in Engineering

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Dual-wavelength fiber lasers have become an attractive candidate for the last few years in the area of optical imaging, optical communication, optical sensing, microwave, and terahertz signal generation. It offers small size, inexpensive, and simple fabrication along with high scalability to the existing state-of-theart microwave-photonics networks. In this paper, we demonstrate experimentally a switchable dualwavelength fiber laser for the generation of the radio frequency signals in the millimeter band (up to 110 GHz). The fiber laser is based on a nonlinear polarization rotation ring-cavity consisting of erbium-doped fiber and a high birefringence fiber of 1 m and 10 m length, respectively. By proper adjustment of the laser cavity birefringence via controlling the polarization controllers in the laser cavity, the laser output spectrum can be tuned to attain a dual-wavelength spacing in the range of 0.1 nm-0.89 nm to generate flexible and stable millimeter waves with an adjustable span of 12.3 GHz to 110 GHz. The obtained results reveal the potential of the proposed laser to be used to realize different microwave-photonic systems/networks, for instance, 5G networks, internet of things, surveillance and monitoring, remote sensing, self-driving vehicles, photonics-based radar systems, meteorology and so on.

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“…Since the late 1980s, several on-board coherent wind lidars have been developed, tested and exploited, based on various laser technologies, i.e., at 10.6 µm with a gas laser [1][2][3], and at 2 µm with a solid state laser [4][5][6]. Recent progress in fiber laser technology has enabled new lidar technology development [7][8][9][10]. More robust and compact fiber technology paves the way for the simple and standard use of coherent Doppler lidar from an airplane.…”

Section: Introductionmentioning

confidence: 99%

Three-Dimensional Wind Measurements with the Fibered Airborne Coherent Doppler Wind Lidar LIVE

et al. 2019

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A three-dimensional (3D) wind profiling Lidar, based on the latest high power 1.5 µm fiber laser development at Onera, has been successfully flown on-board a SAFIRE (Service des Avions Français Instrumentés pour la Recherche en Environnement) ATR42 aircraft. The Lidar called LIVE (LIdar VEnt) is designed to measure wind profiles from the aircraft down to ground level, with a horizontal resolution of 3 km, a vertical resolution of 100 m and a designed accuracy on each three wind vector components better than 0.5 m.s−1. To achieve the required performance, LIVE Lidar emits 410 µJ laser pulses repeating at 14 KHz with a duration of 700 ns and uses a conical scanner of 30° total opening angle and a full scan time of 17 s.

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1.5 μm all fiber pulsed lidar for wake vortex monitoring

Cited by 11 publications

References 1 publication

Evaluating modelled winds over an urban area using ground‐based Doppler lidar observations

Evaluating modelled winds over an urban area using ground‐based Doppler lidar observations

Phase-stable millimeter-wave generation using switchable dual-wavelength fiber laser

Three-Dimensional Wind Measurements with the Fibered Airborne Coherent Doppler Wind Lidar LIVE

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