A portable S-DIMM developed for preliminary measurement of seeing for Solar Site Survey: Theory and one case study

XM Duan, Y Liu, TF Song, FR Zhu - New Astronomy, 2024 - Elsevier
Imaging quality is highly important for astronomical observations. The imaging quality of a
telescope depends not only on the capabilities of the telescope itself but also on its location …

Secure free-space communication, turbulence mitigation, and other applications using acousto-optic chaos

MR Chatterjee, A Mohamed, FS Almehmadi - Applied Optics, 2018 - opg.optica.org
Use of acousto-optic (AO) chaos via the feedback loop in a Bragg cell for signal encryption
began as a conceptual demonstration around 2008. Radio frequency (RF) chaos from a …

Spectral analysis and implementation of secure chaotic free-space optical communication systems

MM Sepantaie, NM Namazi… - Optical …, 2018 - spiedigitallibrary.org
This paper aims to present a Lorenz chaotic free-space optical (FSO) communication system
(LC-FSO-CS), and to study the impact of FSO channel on a transmitted Lorenz chaotic signal …

Image intensity recovery with mitigation in the presence of gamma–gamma atmospheric turbulence using encrypted chaos

A Mohamed, MR Chatterjee - Optical Engineering, 2019 - spiedigitallibrary.org
Mitigation of image distortion under modified von Karman-type phase turbulence has been
examined by using acousto-optic (AO) chaos waves generated via feedback in a Bragg cell …

Gaussian Beam Propagation Through Turbulent Atmosphere using Second-Order Split-Step Algorithm

E Jera, A Mohamed - 2019 IEEE National Aerospace and …, 2019 - ieeexplore.ieee.org
In this work, we will be using the numerical method called Second-Order Split-Step
Algorithm (SSM) to study the propagation of Gaussian beam through turbulent atmosphere …

Non-chaotic and chaotic propagation of stationary and dynamic images through MVKS turbulence

A Mohamed, MR Chatterjee - Journal of Modern Optics, 2019 - Taylor & Francis
Anisoplanatic electromagnetic (EM) propagation across a turbulent atmosphere has been
recently examined for an unmodulated carrier propagating over an image-bearing …

Mitigation of image intensity distortion using chaos-modulated image propagation through gamma-gamma atmospheric turbulence

AA Mohamed, MR Chatterjee - Long-Range Imaging III, 2018 - spiedigitallibrary.org
In recent work, mitigation of image distortion caused by modified von Karman-type (MVKS)
phase turbulence has been investigated by using chaos waves generated via acousto-optic …

[图书][B] Investigation of Anisoplanatic Chaos-based Signal and Image Transmission and Retrieval Through Atmospheric Phase Turbulence

A Mohamed - 2020 - search.proquest.com
This research began as a continuation of work on the propagation of planar electromagnetic
(EM) waves through a turbulent atmosphere, specifically a form of refractive index based …

Image propagation through extended MVKS phase turbulence under variable turbulence inner scale

A Mohamed, MR Chatterjee - Digital Holography and Three …, 2020 - opg.optica.org
Image propagation through turbulence is examined using Hufnagel-Valley model for
different turbulent path distances. Performance is assessed via cross-correlation (CC) …