Results 111 to 120 of about 12,158 (226)

Lidar and Mission Parameter Trade Study of Space-Based Coherent Wind Measurement Centered on NASA's 2006 GWOS Wind Mission Study Parameters [PDF]

open access: yes, 2007
The global measurement of vertical profiles of horizontal vector winds has been highly desired for many years by NASA, NOAA and the Integrated Program Office (IPO) implementing the National Polar-orbiting Operational Environmental Satellite Systems ...
Frehlich, Rod G., Kavaya, Michael J.
core   +1 more source

Evaluation and Wind Field Detection of Airborne Doppler Wind Lidar with Automatic Intelligent Processing in North China

open access: yesAtmosphere
Airborne wind measurement is of great significance for understanding atmospheric motion and meteorological monitoring. In this paper, we present the development and verification of an airborne Doppler wind lidar (ADWL), featuring an approach proposed to ...
Xu Zhang   +5 more
doaj   +1 more source

Adaptive optics in coherent lidar wind measurements: A feasibility study [PDF]

open access: yes
Laser Doppler radar (lidar) is widely used for remote sensing of wind velocities. Usable wavelengths for the laser are limited by the effects of atmospheric turbulence. An adaptive optical system is proposed to compensate for turbulence effects on signal
Leland, Robert P.
core   +1 more source

The NCAR Airborne Infrared Lidar System (NAILS) [PDF]

open access: yes, 1986
A planned airborne lidar system is presented which is intended to provide a remote sensing facility for a variety of applications. The eventual goal of the system development is a Doppler wind measurement capability for boundary layer dynamics and cloud ...
Lightsey, P. A., Schwiesow, R. L.
core   +1 more source

Influence of coherent mesoscale structures on satellite-based Doppler lidar wind measurements [PDF]

open access: yes
The influence of coherent mesoscale structures on satellite based Doppler lidar wind measurements was investigated. Range dependent weighting functions and the single shot SNR of scan angle are examined and a space shuttle lidar experiment which used a ...
Emmitt, G. D.
core   +1 more source

Latent Heat Fluxes over Complex Terrain Measured by Airborne Water Vapour and Wind Lidars [PDF]

open access: yes, 2010
The combination of a water vapour and a wind lidar on an aircraft is an interesting new tool that allows to measure latent heat flux profiles and to portray the small- to mesoscale variability beneath the aircraft trajectory with high accuracy and ...
Kiemle, Christoph
core  

Evaluation of data obtained from atmospheric laser Doppler velocimeter [PDF]

open access: yes
The Doppler lidar velocimeter produces a variety of kinds of data. Besides the line of sight velocity components, there are the reflected amplitudes and the Doppler widths. Computer graphics software for displaying these data was produced.
Keck, T. S., Telford, J. W.
core   +1 more source

Pulsed Doppler lidar for the detection of turbulence in clear air [PDF]

open access: yes
A pulsed C02 Doppler lidar system is described and demonstration tests in ground-based and airborne flight operations are discussed. As a ground-based system, it can detect wind shears in thunderstorm gust fronts to a range of 6 km.
Bilbro, J. W.   +6 more
core   +1 more source

Doppler lidar signal and turbulence study [PDF]

open access: yes
Wind fields were measured with the ground-based NASA/MSFC lidar are compared with the in situ NASA RB-57 aircraft measurements. The mean wind fields, the turbulence intensities, and the turbulence spectra determined from measurements by both systems are ...
Frost, W., Huang, K. H.
core   +1 more source

ADM-Aeolus pre-launch activities and recent advances in spaceborne and airborne Wind Lidar Systems [PDF]

open access: yes, 2016
The first space-borne wind lidar mission ADM-Aeolus from ESA is currently scheduled for launch by mid-2017. For the preparation of the Aeolus validation, an airborne field experiment was performed during 3 weeks in May 2015 with the DLR Falcon and the ...
Chouza Keil, Fernando German   +5 more
core  

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