Optical Autocovariance Wind Lidar (OAWL): aircraft test-flight history and current plans

Tucker, S. C.; Weimer, Carl; Adkins, Mike; Delker, T.; Gleeson, David T.; Kaptchen, Paul; Good, Bill; Kaplan, Mike; Applegate, Jeff; Taudien, Glenn E.

doi:10.1117/12.2190792

Cited by 5 publications

(2 citation statements)

References 6 publications

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“…This field widening (FW) may be realized with two-path interferometers such as Mach-Zehnder (MZ) and Michelson (MI) setups, as opposed to multiple-path interferometers such as Fizeau and Fabry-Perot. The MZ technique has, for example, been adopted by French LATMOS [47] in their multi-purpose lidar LNG and by Ball Aerospace in the different generations of the OAWL lidar [48,49].…”

Section: The Spectral Analyzing Part: Fw-fimimentioning

confidence: 99%

Aeronautics Application of Direct-Detection Doppler Wind Lidar: An Adapted Design Based on a Fringe-Imaging Michelson Interferometer as Spectral Analyzer

Vrancken

Herbst

2022

Remote Sensing

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We report on the development of a novel direct-detection Doppler wind lidar (DD-DWL) within the strong requirements of an aeronautic feed-forward control application for gust load alleviation (GLA). This DD-DWL is based on fringe imaging of the Doppler-shifted backscatter of ultraviolet laser pulses in a field-widened Michelson interferometer (FW-FIMI) using a fast linear photodetector. The double approach of detailed simulation and demonstrator development is validated by field measurements with reference wind sensing instrumentation. These experiments allow us to establish wind determination precision at a high repeat rate, short range resolution and close distance of approximately 0.5 m/s, which is in accordance with the dedicated simulations. These findings lead us to the conclusion that this FW-FIMI-based Doppler wind lidar is a pertinent development meeting the special requirements of this aeronautics application. Second, the developed simulators are well suited (given their validation) to be used in the overall and full analysis as well as the optimization of the lidar-based GLA control scheme.

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Section: The Spectral Analyzing Part: Fw-fimimentioning

confidence: 99%

Aeronautics Application of Direct-Detection Doppler Wind Lidar: An Adapted Design Based on a Fringe-Imaging Michelson Interferometer as Spectral Analyzer

Vrancken

Herbst

2022

Remote Sensing

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“…1 Direct detection 2 is employed in the majority of other lidar systems and some nonheterodyne Doppler lidars. 3,4 Within the category of direct detection, there are two possibilities: analog detection and photon counting. Analog detection systems are used when the rate of arrival of backscatter photons is too large to be counted individually.…”

Section: Introductionmentioning

confidence: 99%

Comparison of an analog direct detection and a micropulse aerosol lidar at 1.5 - μ m wavelength for wind field observations—with first results over the ocean

Mayor

Dérian

Mauzey

et al. 2016

J. Appl. Remote Sens

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The performance of two direct-detection atmospheric lidar systems with very different methods of generating and detecting laser radiation is compared as the result of a field experiment held in March 2015, in Chico, California. During the noncontinuous, 11-day test period, in which the systems operated side by side, the micropulse lidar was operated at its maximum pulse repetition frequency (15 kHz) and integrated elastic backscatter over the interpulse period of the analog direct-detection lidar (0.1 s). Operation at the high pulse repetition frequency resulted in second-trip echoes that contaminated portions of the data. The performance of the micropulse lidar varied with background brightness-as expected with a photon-counting receiver-yet showed equal or larger backscatter intensity signal-to-noise ratio throughout the experiment. Examples of wind fields and time series of wind vectors from both systems during the Chico experiment are presented. In addition, scans over the ocean that were collected by the micropulse lidar during a subsequent deployment on the northern California coast are presented. We conclude by reviewing the advantages and disadvantages of each system and make some suggestions to improve the design and performance of future systems. © The Authors. Published by SPIE under a Creative Commons Attribution 3.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.

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Recent progress on UV lasers for airborne and space-based applications

Hovis

Albert

Fitzpatrick

et al. 2017

2017 IEEE International Geoscience and Remote Sensing Symposium (IGARSS)

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Optical Autocovariance Wind Lidar (OAWL): aircraft test-flight history and current plans

Cited by 5 publications

References 6 publications

Aeronautics Application of Direct-Detection Doppler Wind Lidar: An Adapted Design Based on a Fringe-Imaging Michelson Interferometer as Spectral Analyzer

Aeronautics Application of Direct-Detection Doppler Wind Lidar: An Adapted Design Based on a Fringe-Imaging Michelson Interferometer as Spectral Analyzer

Comparison of an analog direct detection and a micropulse aerosol lidar at 1.5 - μ m wavelength for wind field observations—with first results over the ocean

Recent progress on UV lasers for airborne and space-based applications

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