Results 141 to 150 of about 1,690 (181)

A compact general-purpose Doppler Lidar for lidar networks

2023
We present the state of the VAHCOLI (Vertical and Horizontal COverage by Lidar) project for investigating small- to large-scale processes in the atmosphere. In the future, an array of compact lidars with multiple fields of view will allow for measurements of temperatures, winds and aerosols with high temporal and vertical resolution.Doppler lidars, in ...
Jan Froh, Josef Höffner, Alsu Mauer, Thorben Mense, Ronald Eixmann, Gerd Baumgarten, Franz-Josef Lübken, Alexander Munk, Sarah Scheuer, Michael Strotkamp, Bernd Jungbluth   +10 more
openaire   +1 more source

Coherent Doppler Lidar Edge Technique

Coherent Laser Radar, 1995
With a coherent Doppler lidar one can measure both, the aerosol and the velocity profile. For direct detection the edge technique was proposed (Korb et al. 1994) to get information on the velocity too.
openaire   +2 more sources

Pulsed Doppler lidar at QinetiQ

SPIE Proceedings, 2004
Recent developments in pulsed Doppler lidar technology for range-resolved aerosol and hard-target imaging applications are presented. Systems based upon CO2 and fiber-optic technologies at wavelengths of 10.6 μm and 1.5 μm respectively are described.
openaire   +1 more source

Mission profiles for the proposed Doppler lidar WIND

Coherent Laser Radar: Technology and Applications, 1991
During phase A of the development of the airborne pulsed CO2 laser-Doppler system WIND [1] a lot of scientific objectives were studied. The intension for the airborne system is — to use it for wind field measurements— to use the experience during the development and test phase for further development of a spaccborne lidar.
Werner, Ch., Schwiesow, R., Benesch, W.
openaire   +2 more sources

Vertical wind velocity measurements by a Doppler lidar and comparisons with a Doppler sodar

Applied Optics, 1981
A Doppler lidar based on a single frequency Ar(+) laser and a spherical Fabry-Perot interferometer is used to study the vertical velocity field in the planetary boundary layer. The wind velocity information is obtained by spectral analysis of the aerosol backscatter.
F, Congeduti, G, Fiocco, A, Adriani, C, Guarrella   +3 more
openaire   +2 more sources

Psionic Doppler Lidar Velocimeter and Rangefinder: Commercializing NASA’s Navigation Doppler Lidar

AIAA SCITECH 2022 Forum, 2022
Diego Pierrottet, Stephen P. Sandford
openaire   +1 more source

Autodyne Coherent Doppler Lidars

Coherent Laser Radar: Technology and Applications, 1991
Autodyne coherent lidars, i.e., the lidars with intracavity reception of the echo-signals proved to be of efficient for studying the atmosphere1-3. They possess high sensitivity and high noise immunity. They make it possible to determine few parameters in question simultaneously, namely: the absorption along the path, the distance to the retroreflector
openaire   +1 more source

Comparative precision of distributed-backscatter Doppler lidars

Applied Optics, 1995
Simple formulas for the standard deviation that is available from Doppler velocity estimators through the use of direct-detection frequency discriminators for targets spread in range are derived and contrasted with the fundamental limits provided by the Cramer-Rao bounds for both direct-detection and heterodyne systems. The structures of these formulas
openaire   +2 more sources

Doppler Wind Lidar From UV to NIR: A Review With Case Study Examples

Frontiers in Remote Sensing, 2022
Haiyun Xia, Haiyun Xia, Jinlong Yuan
exaly  

Structure Analysis of the Sea Breeze Based on Doppler Lidar and Its Impact on Pollutants

Remote Sensing, 2022
Xiaoquan Song, Jiaxin Liu, Song Xiaoquan   +2 more
exaly