Results 61 to 70 of about 20,211 (224)

Impact of Lidar Data Assimilation on Low-Level Wind Shear Simulation at Lanzhou Zhongchuan International Airport, China: A Case Study

open access: yesAtmosphere, 2020
Doppler wind lidar has played an important role in alerting low-level wind shear (LLW). However, these high-resolution observations are underused in the model-based analysis and forecasting of LLW.
Lanqian Li   +6 more
doaj   +1 more source

Compact, Engineered 2-Micron Coherent Doppler Wind Lidar Prototype for Field and Airborne Evaluation [PDF]

open access: yes, 2006
The state-of-the-art 2-micron coherent Doppler wind lidar breadboard at NASA/LaRC will be engineered and compactly packaged consistent with future aircraft flights.
Amzajerdian, Farzin   +2 more
core   +1 more source

Morphological instability in restored intertidal flats: How anthropogenic structures drive early‐stage evolution

open access: yesEarth Surface Processes and Landforms, Volume 51, Issue 3, March 2026.
The study focusses on the morphological evolution of worldwide restored intertidal flats. These intertidal flats initially experience high sedimentation rates after the opening of the connection with open waters. The anthropogenic structures cause high morphological instability and are eroded, leading to a self‐cannibalisation of the system.
Riccardo Brunetta   +4 more
wiley   +1 more source

Real Time Turbulence Estimation Using Doppler Lidar Measurements

open access: yesEPJ Web of Conferences, 2016
A preliminary work on a new way to estimate atmospheric turbulence using high-frequency Doppler lidar measurements is presented. The turbulence estimations are based on wind reconstruction using 3D Doppler lidar observations and a particle filter.
Rottner Lucie, Baehr Christophe
doaj   +1 more source

Floodplain Conservation Versus Landscape Development—How to Tackle the Multifunctional Management Issue

open access: yesWIREs Water, Volume 13, Issue 2, March/April 2026.
The ability to perform a number of ecosystem functions is degraded by the inappropriate damming of agricultural floodplains (by levee construction) or by the continuous urban expansion, where flood protection is justified but at the cost of affecting the environmental stability of the wider landscape.
Jiří Jakubínský   +17 more
wiley   +1 more source

Aircraft Wake Vortex Parametrization Based on 1.5-μm Coherent Doppler Lidar Data

open access: yesEPJ Web of Conferences, 2016
A strategy of measurement by a 1.5-μm pulsed coherent Doppler lidar “Stream Line” has been developed, and a method for estimation of aircraft wake vortices from the lidar data has been proposed.
Banakh V.A., Smalikho I.N.
doaj   +1 more source

Compact, High Energy 2-micron Coherent Doppler Wind Lidar Development for NASA's Future 3-D Winds Measurement from Space [PDF]

open access: yes, 2010
This paper presents an overview of 2-micron laser transmitter development at NASA Langley Research Center for coherent-detection lidar profiling of winds.
Bai, Yingxin   +12 more
core   +1 more source

On Wind Directions Estimated by Nacelle Lidar Under Different Reconstruction Methods

open access: yesWind Energy, Volume 29, Issue 3, March 2026.
ABSTRACT The wind direction is closely linked to the power performance and structural loads of wind turbines. Conventional nacelle‐mounted vanes or sonic anemometers face errors associated with airflow distortions caused by turbine blades. Nacelle‐mounted lidar systems offer line‐of‐sight speed measurements from multiple positions ahead of the rotor ...
Feng Guo   +7 more
wiley   +1 more source

Design of a Non-scanning Lidar for Wind Velocity and Direction Measurement

open access: yesEPJ Web of Conferences, 2016
A Doppler lidar system for wind velocity and direction measurement is presented. The lidar use a wide field of view (FOV) objective lens as an optical antenna for both beam transmitting and signal receiving.
Liu Bo, Peng Zhangxian
doaj   +1 more source

Coherent Doppler Lidar for Precision Navigation of Spacecrafts [PDF]

open access: yes, 2011
A fiber-based coherent Doppler lidar, utilizing an FMCW technique, has been developed and its capabilities demonstrated through two successful helicopter flight test campaigns.
Amzajerdian, Farzin   +5 more
core   +1 more source

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