Results 121 to 130 of about 148,136 (310)

The Scheimpflug lidar method

, 2017
The recent several years we developed the Scheimpflug lidar method. We combined an invention from the 19th century with modern optoelectronics such as diode lasers and CMOS array from the 21st century.
Sandra Török, Jansson, Samuel,, Brydegaard, Mikkel, Mikkel Brydegaard, Elin Malmqvist, Jim Larsson, Guangyu Zhao, Török, Sandra,, Török, Sandra, Malmqvist, Elin, Jansson, Samuel, Zhao, Guangyu, Malmqvist, Elin,, Larsson, Jim,, Brydegaard, Mikkel,, Larsson, Jim, Lund University., Samuel Jansson, Zhao, Guangyu,   +18 more
core   +1 more source

Pancharatnam–Berry Phase Driven by Electrical Restructuring of Liquid Crystal Polarization Grating Period

Laser &Photonics Reviews, EarlyView.
Electrically controlled liquid‐crystal twist diffraction element based on the Pancharatnam–Berry phase enables switchable structural periodicity and simultaneous generation of orthogonal circularly polarized coherent waves for multifunctional planar photonic devices.
Elena Melnikova, Katsiaryna Pantsialeyeva, Alexei Tolstik, Veranika Stanevich, Daminika Dashkevich, Anatoli Murauski, Alexander Muravsky, Alina Karabchevsky   +7 more
wiley   +1 more source

A CFD technique for estimating the flow distortion effects on LiDAR measurements when made in complex flow fields

, 2013
The effect of flow distortion on the measurements produced by a LiDAR or SoDAR in close proximity to either complex terrain or a structure creating localised flow distortion is difficult to determine by analytical means.
Astrup, P., Fabre, Sylvie, Mikkelsen, Torben, Scanlon, Thomas, Stickland, Matthew, Oldroyd, Andrew   +5 more
core  

Lidar felvételek feldolgozása speciális alkalmazásokhoz

, 2020
Lidar technológia áttekintése nyitja a dolgozatot. A folytatásban egy konkrét példán, feladaton keresztül bemutatásra kerül egy Lidar felvétel feldolgozása is képfeldolgozó algoritmusokkal.
Király, Máté
core  

Optical‐to‐Microcomb Stability Transfer for Ultrastable Timing and Microwave/Millimeter‐Wave Generation

Laser &Photonics Reviews, EarlyView.
This work demonstrates a high‐fidelity stability transfer from an optical reference to a high‐repetition‐rate microcomb using a mode‐locked laser bridge. By employing electro‐optic sampling timing detection, femtosecond‐level synchronization and 10−18‐level fractional frequency stability are achieved.
Changmin Ahn, Junyong Choi, Daewon Suk, Hansuek Lee, Jungwon Kim   +4 more
wiley   +1 more source

Clear air turbulence detection and characterisation in the delicat airborne lidar project

, 2010
We report on a development of a long-range airborne UV high spectral resolution lidar, intended for the detection and characterisation of clear air turbulence (CAT).
Hervé Barny, Martin Wirth, Lombard, Laurent, Rees, David, Barny, Hervé, Gaudo, Thierry, Rempel, Dimitry, D. Rees, Gerhard Ehret, Rondeau, Philippe, Dolfi-Bouteyre, Agnès, Patrick Vrancken, Vrancken, Patrick, Laurent Lombard, David Rees, Agnes Dolfi-bouteyre, Thierry Gaudo, Dimitry Rempel, Ehret, Gerhard, Wirth, Martin   +19 more
core  

Responsive Phase Gradient Metasurface for Laser Stealth and Dynamic Thermal Camouflage

Laser &Photonics Reviews, EarlyView.
The graphical abstract depicts a phase‐gradient metasurface enabling directional scattering and emissivity‐controlled thermal radiation. The engineered phase profile redistributes the reflected optical momentum, suppressing specular reflection and generating non‐specular scattering.
Zhihao Yuan, Yanlei Liu, Kun Yu, Han Dai, Tianxu Jia, Zhiying Chen, Junsuk Rho, Yufang Liu   +7 more
wiley   +1 more source

Airborne water vapour and wind lidar measurements of latent heat fluxes during COPS 2007

, 2010
During the Convective and Orographically-induced Precipitation Study (COPS) in July 2007 over the Black Forest Mountains in south-western Germany, tropospheric profiles of water vapour and wind were measured with a differential absorption lidar (DIAL ...
Kiemle, Christoph, Fix, Andreas, Rahm, Stephan, Wirth, Martin   +3 more
core  

LiDAR Technology: Principles and Comparative Analysis of Detection Systems

, 2023
openIl LiDAR, acronimo di Light Detection And Ranging è una tecnica di telerilevamento che sfrutta le proprietà ottiche della luce polarizzata per ottenere vantaggi unici. In molti aspetti simile alla tecnologia radar, si differenzia in particolare per
PESCAROLO, GIULIO
core  

Urban‐driven homogenization of aquatic subsidy size structure cascades to riparian predator communities

Oikos, EarlyView.
The export of emergent aquatic insects is a critical energy subsidy for terrestrial food webs. While urbanization is known to alter stream communities, its effects on the size structure of these insect subsidies and the subsequent consequences for riparian predators remain poorly understood.
Charles Gagnon, Louis‐Philippe Beauchamp, Eric Harvey   +2 more
wiley   +1 more source