Results 41 to 50 of about 957,049 (196)

CÆLIS: software for assimilation, management and processing data of an atmospheric measurement network [PDF]

open access: yesGeoscientific Instrumentation, Methods and Data Systems, 2018
Given the importance of the atmospheric aerosol, the number of instruments and measurement networks which focus on its characterization are growing. Many challenges are derived from standardization of protocols, monitoring of the instrument status to ...
D. Fuertes   +7 more
doaj   +1 more source

Measurement of CO2 by Wavelength Modulated Reinjection Off-Axis Integrated Cavity Output Spectroscopy at 2 μm

open access: yesAtmosphere, 2021
A high sensitivity wavelength modulated reinjection off-axis integrated cavity output spectroscopy (WM-RE-OA-ICOS) experimental setup was built at a 2 μm band. On the basis of an off-axis integrated output spectroscopy (OA-ICOS), combined with an optical
Zihao Yuan   +6 more
doaj   +1 more source

Optimising the NAOMI adaptive optics real-time control system [PDF]

open access: yes, 2008
This thesis describes the author's research in the field of Real-Time Control (RTC) for Adaptive Optics (AO) instrumentation. The research encompasses experiences and knowledge gained working in the area of RTC on astronomical instrumentation projects ...
Goodsell, S. J., Goodsell, S J
core  

Conception and development of an adaptive optics testbed for free-space optical communication [PDF]

open access: yes, 2009
Optical free space communications are an efficient approach to transmit high data-rates with small antennas and low power consumption over large distances. Possible scenarios are links between satellites, up- and down-links from and to ground stations as
Moll, Florian
core  

Estimating the Parameters of Wind Turbulence from Spectra of Radial Velocity Measured by a Pulsed Doppler Lidar

open access: yesRemote Sensing, 2021
The strategy providing an estimation of both the mean velocity and the temporal and spatial spectra of radial velocity from data of the same pulse coherent Doppler lidar is proposed.
Viktor A. Banakh   +3 more
doaj   +1 more source

A Method of Measuring Fabry-Parot Etalon Transmittance by Using Frequency Comb Laser [PDF]

open access: yesEPJ Web of Conferences, 2020
This paper presents a method for instantaneous measurement of Fabry-Parot(F-P) transmittance curve. Compared with the previous method, this method has many advantages, such as scanning-free, simple in structure and accuracy.
Chu Yufei   +10 more
doaj   +1 more source

Image sharpening metrics and search strategies for indirect adaptive optics [PDF]

open access: yes, 2000
Adaptive optics is concerned with the correction of turbulence induced aberrations and mis-alignments in optical systems. It is an expensive and complicated technology which has been developed for astronomy and defence applications.
Doble, N., Doble, Nathan
core  

Aerosol Characteristics in the Near-Ground Layer of the Atmosphere of the City of Tomsk in Different Types of Aerosol Weather

open access: yesAtmosphere, 2019
Considering the wide range of variability of all aerosol characteristics (especially in the near-ground layer of the atmosphere near industrial centers), when creating a realistic empirical model of optical and microphysical characteristics, the optimal ...
Mikhail V. Panchenko   +9 more
doaj   +1 more source

New Technique for Aerosol Detection in Haze Day Using Side‐Scattering Lidar and Its Inversion Method

open access: yesEarth and Space Science, 2020
The new side‐scattering lidar using two charge‐coupled device cameras and one CW laser is developed to measure the near‐ground aerosol profiles in haze day, which is a powerful tool and is most interested for the environmental and meteorological agencies.
Zhenzhu Wang   +4 more
doaj   +1 more source

Evaluation of High Cloud Product of ECMWF Over South China Sea Using CALIOP

open access: yesEarth and Space Science, 2022
High clouds are globally widespread and are crucially important to global radiative processes and to the thermal balance of the Earth. Active remote sensing measurements can provide more reliable detection of optically thin cirrus clouds than passive ...
Wenqiang Lu   +7 more
doaj   +1 more source

Home - About - Disclaimer - Privacy