Results 41 to 50 of about 26,913 (214)
Photonics, 2022 Analytical expressions for the cross-spectral density matrix of a partially coherent twisted Laguerre-Gaussian pulsed (PCTLGP) beam in anisotropic atmospheric turbulence are derived based on the extended Huygens–Fresnel principle.
Ying Xu, Yonggen Xu, Tiejun Wang
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Rossby number similarity of an atmospheric RANS model using limited-length-scale turbulence closures extended to unstable stratification [PDF]
Wind Energy Science, 2020 The design of wind turbines and wind farms can be improved by increasing the accuracy of the inflow models representing the atmospheric boundary layer.
M. P. van der Laan +3 more
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BPSK subcarrier intensity modulated free-space optical communications in atmospheric turbulence
, 2009 Free-space optical communications (FSO) propagated over a clear atmosphere suffers from irradiance fluctuation caused by small but random atmospheric temperature fluctuations.
Ghassemlooy, Zabih +3 more
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International Journal of Optics, 2016 This paper investigates the modulation transfer function of a Gaussian beam propagating through a horizontal path in weak-fluctuation non-Kolmogorov turbulence. Mathematical expressions are obtained based on the generalized modified atmospheric spectrum,
Chao Gao, Xiaofeng Li
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Object Recognition in Atmospheric Turbulence Scenes
2023 31st European Signal Processing Conference (EUSIPCO), 2023 The influence of atmospheric turbulence on acquired surveillance imagery poses significant challenges in image interpretation and scene analysis. Conventional approaches for target classification and tracking are less effective under such conditions. While deep-learning-based object detection methods have shown great success in normal conditions, they ...
Disen Hu, Nantheera Anantrasirichai
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Results in Optics, 2021 Aperture averaging (AA) is a potential technique to reduce the effect of atmospheric turbulence in optical wireless communications (OWC). Although there is significant research on point-like detectors, there is a gap in the study on the analytical ...
Ziyaur Rahman +2 more
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Adaptive optics solutions for turbulence mitigation in different scenarios
, 2022 Paper 816104Several studies on different adaptive optics concepts are presented in the article. Each one of the procedures shows its peculiar advantages when considering different situations where the image distortion, due to atmospheric or artificial ...
Scheifling, C., Marchi, G.
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Frontiers in Physics, 2023 Although free-space optical communication (FSOC) is a promising means of high data rate satellite-to-ground communication, beam distortion caused by atmospheric optical turbulence remains a major challenge for its engineering applications.
Yalin Li +10 more
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Stabilizing and deblurring atmospheric turbulence [PDF]
2011 IEEE International Conference on Computational Photography (ICCP), 2011 A new approach is proposed to correct geometric distortion and reduce space and time-variant blur in videos that suffer from atmospheric turbulence. We first register the frames to suppress geometric deformation using a B-spline based non-rigid registration method.
Xiang Zhu, Peyman Milanfar
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Computational Imaging Through Atmospheric Turbulence
Foundations and Trends® in Computer Graphics and Vision, 2023 Since the seminal work of Andrey Kolmogorov in the early 1940’s, imaging through atmospheric turbulence has grown from a pure scientific pursuit to an important subject across a multitude of civilian, space-mission, and national security applications.
Stanley H. Chan, Nicholas Chimitt
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