Results 51 to 60 of about 1,120,334 (339)
Linear prediction of atmospheric wave-fronts for tomographic adaptive optics systems: modelling and robustness assessment. [PDF]
Optics Letters, 2015 We use a theoretical framework to analytically assess temporal prediction error functions on von-Kármán turbulence when a zonal representation of wavefronts is assumed. The linear prediction models analyzed include auto-regressive of an order up to three,
K. Jackson +4 more
semanticscholar +1 more source
Computational Imaging Through Atmospheric Turbulence
Foundations and Trends® in Computer Graphics and Vision, 2023 Seeing through a turbulent atmosphere has been one of the biggest challenges for ground-to-ground long-range incoherent imaging systems. The literature is very rich that can be dated back to Andrey Kolmogorov in the late 40’s, followed by a series of ...
Hong Kong +3 more
semanticscholar +1 more source
CÆLIS: software for assimilation, management and processing data of an atmospheric measurement network [PDF]
Geoscientific 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
Photonics, 2022 This article addresses two issues. Firstly, it was shown that if the initial phase of a Gaussian beam is specified by the sum of Zernike polynomials or by a screen simulating atmospheric turbulence, in the process of propagation, singular points appear ...
Feodor Kanev +2 more
doaj +1 more source
Production of Phase Screens for Simulation of Atmospheric Turbulence
, 2012 The ability to simulate atmospheric turbulence in the lab is a crucial part of testing and developing astronomical adaptive optics technology. We report on the development of a technique for creating phase plates, which involves the strategic application
Dillon, Daren +3 more
core +1 more source
BER and outage probability of DPSK subcarrier intensity modulated free space optics in fully developed speckle. [PDF]
, 2009 In this paper a differential phase shift keying (DPSK) subcarrier intensity modulated (SIM) free space optical (FSO) link is considered in negative exponential atmospheric turbulence environment.
Ghassemlooy, Zabih +2 more
core +2 more sources
Atmospheric turbulence degraded image restoration using a modified dilated convolutional network
IET Image Processing, 2022 Long‐distance imaging is generally blurry and warped due to the presence of atmospheric turbulence, which harms the performance of the photoelectric system.
Changdong Su +5 more
doaj +1 more source
The Optical Design of CHARIS: An Exoplanet IFS for the Subaru Telescope [PDF]
, 2013 High-contrast imaging techniques now make possible both imaging and spectroscopy of planets around nearby stars. We present the optical design for the Coronagraphic High Angular Resolution Imaging Spectrograph (CHARIS), a lenslet-based, cryogenic ...
Brandt, Timothy +17 more
core +3 more sources
Molecular Oncology, EarlyView.Aldehyde dehydrogenase 1A1 (ALDH1A1) is a cancer stem cell marker in several malignancies. We established a novel epithelial cell line from rectal adenocarcinoma with unique overexpression of this enzyme. Genetic attenuation of ALDH1A1 led to increased invasive capacity and metastatic potential, the inhibition of proliferation activity, and ultimately ...
Martina Poturnajova +25 more
wiley +1 more source
Remote 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