Anticipating optical availability in hybrid RF/FSO links using RF beacons and deep learning

M Ibrahim, A Ahmad, S Ekin, P LoPresti… - … Machine Learning in …, 2024 - ieeexplore.ieee.org
Radiofrequency (RF) communications offer reliable but low data rates and energy-inefficient
satellite links, while free-space optical (FSO) promises high bandwidth but struggles with …

Comparison of different models for ground-level atmospheric turbulence strength (Cn2) prediction with a new model according to local weather data for FSO …

A Arockia Bazil Raj, J Arputha Vijaya Selvi… - Applied optics, 2015 - opg.optica.org
Atmospheric parameters strongly affect the performance of free-space optical
communication (FSOC) systems when the optical wave is propagating through the …

Turb-Seg-Res: A Segment-then-Restore Pipeline for Dynamic Videos with Atmospheric Turbulence

RK Saha, D Qin, N Li, J Ye… - Proceedings of the …, 2024 - openaccess.thecvf.com
Tackling image degradation due to atmospheric turbulence particularly in dynamic
environments remains a challenge for long-range imaging systems. Existing techniques …

A data-constrained algorithm for the emulation of long-range turbulence-degraded video

KJ Miller, B Preece, TW Du Bosq… - … Modeling, and Testing …, 2019 - spiedigitallibrary.org
Atmospheric turbulence can cause significant image quality degradation in long-range,
ground-to-ground imagery. There is recent interest in characterizing the performance of …

Turbulence strength C n2 estimation from video using physics-based deep learning

RK Saha, E Salcin, J Kim, J Smith, S Jayasuriya - Optics Express, 2022 - opg.optica.org
Images captured from a long distance suffer from dynamic image distortion due to turbulent
flow of air cells with random temperatures, and thus refractive indices. This phenomenon …

[图书][B] Free space optical communication: system design, modeling, characterization and dealing with turbulence

AAB Raj - 2015 - books.google.com
Recent progress in ICT has exceeded our expectations for meeting the requirement of
multimedia society in the 21st century. The FSOC is considered to be one of the key …

Convolutional neural networks for inference of space object attitude status

GP Badura, CR Valenta, B Gunter - The Journal of the Astronautical …, 2022 - Springer
Convolutional neural networks (CNNs) are utilized for the task of inferring the attitude status
in terms of rotation rate of resident space objects (RSOs) using simulated light curve …

A Neural Network Method for Inversion of Turbulence Strength

W Yin, B Zhang, P Meng, L Zhou, D Qi - Journal of Nonlinear Mathematical …, 2024 - Springer
Accurate inversion of atmospheric turbulence strength is a challenging problem in modern
turbulence research due to its practical significance. Inspired by transfer learning, we …

Crosswind sensing from optical-turbulence-induced fluctuations measured by a video camera

O Porat, J Shapira - Applied Optics, 2010 - opg.optica.org
We present a novel method for remote sensing of crosswind using a passive imaging
device, such as a video recorder. The method is based on spatial and temporal correlations …

Relationship between turbulent image variance and average image gradient

G Potvin - JOSA A, 2024 - opg.optica.org
Optical turbulence can cause substantial distortions in imaging over long horizontal paths.
For Lambertian objects, these distortions are only seen where there is a gradient in the …