Results 1 to 10 of about 20,172 (189)

Quantum-enhanced Doppler lidar

open access: yesnpj Quantum Information, 2022
We propose a quantum-enhanced lidar system to estimate a target’s radial velocity, which employs squeezed and frequency-entangled signal and idler beams.
Maximilian Reichert   +3 more
doaj   +9 more sources

A Review of Progress and Applications of Pulsed Doppler Wind LiDARs [PDF]

open access: yesRemote Sensing, 2019
Doppler wind LiDAR (Light Detection And Ranging) makes use of the principle of optical Doppler shift between the reference and backscattered radiations to measure radial velocities at distances up to several kilometers above the ground.
Zhengliang Liu   +7 more
doaj   +4 more sources

Doppler lidar observations of sensible heat flux and intercomparisons with a ground-based energy balance station and WRF model output [PDF]

open access: yesMeteorologische Zeitschrift, 2009
During the Convective and Orographically induced Precipitation Study (COPS), a scanning Doppler lidar was deployed at Achern, Baden-Wüttemberg, Germany from 13th June to 16th August 2007.
Jenny Davis   +5 more
doaj   +3 more sources

Turbulence Measurements with Dual-Doppler Scanning Lidars [PDF]

open access: yesRemote Sensing, 2019
Velocity-component variances can be directly computed from lidar measurements using information of the second-order statistics within the lidar probe volume.
Alfredo Peña, Jakob Mann
doaj   +3 more sources

A New Airborne Doppler Lidar for Boundary Layer Research & LES-Based Simulation [PDF]

open access: yesEPJ Web of Conferences, 2020
Airborne Doppler lidar measurements are a valuable tool in meteorological research. A new airborne Doppler lidar system has been developed jointly by the Karlsruhe Institute of Technology (KIT) and the Technical University of Brunswick.
Gasch P.   +5 more
doaj   +1 more source

Development of Synergetic-Active Sensor-System for Evaluation of Observations by Earthcare [PDF]

open access: yesEPJ Web of Conferences, 2020
We develop the synergetic ground-based active-sensor-system for the evaluation of observations by space-borne lidars. The system consists of second version of multi-field-view multiple-scattering polarization lidar (MFMSPL-2), multiple-field-of-view high
Okamoto Hajime   +8 more
doaj   +1 more source

Using Machine Learning Methods to Identify Particle Types from Doppler Lidar Measurements in Iceland

open access: yesRemote Sensing, 2021
Doppler lidars are used worldwide for wind monitoring and recently also for the detection of aerosols. Automatic algorithms that classify the lidar signals retrieved from lidar measurements are very useful for the users.
Shu Yang   +4 more
doaj   +1 more source

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

open access: yesEPJ Web of Conferences, 2020
DLR currently investigates the use of Doppler wind lidar as sensor within feedforward gust alleviation control loops on fast-flying fixed-wing aircraft.
Vrancken Patrick, Herbst Jonas
doaj   +1 more source

Multilevel Validation of Doppler Wind Lidar by the 325 m Meteorological Tower in the Planetary Boundary Layer of Beijing

open access: yesAtmosphere, 2020
The high-frequency monitoring of three-dimensional wind fields is crucial in planetary boundary layer meteorology. Doppler wind lidar and meteorological towers are the most important instruments for site observations of three-dimensional wind fields ...
Lindong Dai   +8 more
doaj   +1 more source

Development of an All-Fiber Coherent Doppler Lidar in the IAO SB RAS [PDF]

open access: yesEPJ Web of Conferences, 2020
Paper presents a model of the all-fiber pulsed coherent Doppler lidar (IAO-lidar) build in the IAO SB RAS. Here is described lidar design, the algorithm for processing of lidar signals and the software-hardware system that implements signal processing in
Sherstobitov Artem   +5 more
doaj   +1 more source

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