Propagation Properties of Annular Beam Array for Uplink Satellite Links
Muhsin Caner Gokce (TU Delft - Space Systems Egineering, TED University (TEDU))
Rudolf Saathof (TU Delft - Spaceborne Instrumentation)
More Info
expand_more
Other than for strictly personal use, it is not permitted to download, forward or distribute the text or part of it, without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license such as Creative Commons.
Abstract
The spatial diversity and beam shaping are key approaches to mitigating the effects of atmospheric turbulence on laser beam propagation through free space. This study investigates the propagation characteristics of an annular beam array in atmospheric turbulence for uplink satellite links using the extended Huygens-Fresnel principle and the Rytov method. Analytical derivations are presented for various optical parameters, including received intensity, kurtosis parameter, beam footprint size, Strehl ratio, beam wander, scintillation index, and bit error rate (BER), to evaluate the beam performance under turbulence conditions. The findings indicate that converting a Gaussian beam into an annular shape enhances performance, with further improvements observed as the number of beams increases.
help_outline