The effects of anisotropic turbulence on the wander and spreading of Gaussian-Schell model beams propagating in non-Kolmogorov marine-atmospheric channel are investigated. Expressions for beam wander and long-term beam spreading are derived in all conditions of marine-atmospheric turbulence. Our results indicate that the beam wander and spreading of Gaussian-Schell model beams are lower in the ...

We model the propagation of Gaussian and Bessel beams from ground through 22kmaltitude of atmospheric turbulence. We observe the Bessel beam has better performance based onRMS intensity error and the captured beam power.OCIS codes: (010.1300) Atmospheric propagation; (000.1330) Atmospheric turbulence.

This is the first in a series of papers demonstrating that photons with orbital angular momentum can be created in optical waves propagating through distributed turbulence. The scope of this first paper is much narrower. Here, we demonstrate that atmospheric turbulence can impart non-trivial angular momentum to beams and that this non-trivial angular momentum is highly localized. Furthermore, c...

Birds frequently use the energy present in atmospheric currents to conserve their energy while flying. Although energy in the form of thermal updrafts is routinely used by pilots of fullscale and model sailplanes, the energy in atmospheric turbulence has not been utilized to its full potential. This paper deals with the design of simple control laws to extract energy from atmospheric turbulence...

This is the first in a series of papers demonstrating that photons with orbital angular momentum can be created in optical waves propagating through distributed turbulence. The scope of this first paper is much narrower. Here, we demonstrate that atmospheric turbulence imparts non-trivial angular momentum to beams and that this non-trivial angular momentum is highly localized. Furthermore, crea...

The quality of satellite images propagating through the atmosphere is affected by phenomena such as scattering and absorption of light, and turbulence, which degrade the image by blurring it and reducing its contrast. The atmospheric Wiener filter, which corrects for turbulence blur, aerosol blur, and path radiance simultaneously, is implemented in the digital restoration of Landsat Thematic Ma...

Laser beam propagation in maritime environment is particularly challenging, not only for scattering and absorption due to high humidity, but also for a different behavior of atmospheric turbulence with respect to terrestrial propagation. Recently, a new power spectrum for the fluctuations of the refractive index in the Earth’s atmosphere has been introduced to describe maritime atmospheric turb...

How light and sound propagate through the optically clear atmosphere has been of interest to children, philosophers, scientists, and engineers since antiquity. The quantum leap in our understanding of wave propagation through the turbulent atmosphere, however, came with the pioneering work by Valeryan Tatarskii and collaborators in the 1950’s and 1960’s. Their work enhanced dramatically our abi...

Atmospheric perturbation is certainly the most important degradation when observing a scene horizontally at a distance of several kilometers. Because such images with short time exposure are expensive to obtain, they have to be simulated. The goal of this paper is to adapt simulation and restoration of images perturbated by atmospheric turbulence to the case of horizontal ground observation at ...

In this paper, we investigate the usage of machine learning in the detection and recognition of double stars. To do this, numerous images including one star and double stars are simulated. Then, 100 terms of Zernike expansion with random coefficients are considered as aberrations to impose on the aforementioned images. Also, a telescope with a specific aperture is simulated. In this work, two k...