Research Article
Availability of Free-Space Laser Communication Link with the Presence of Clouds in Tropical Regions
@ARTICLE{10.4108/eetinis.v10i3.3327, author={Thang Nguyen and Hoa Le and Hien Pham and Ngoc Dang}, title={Availability of Free-Space Laser Communication Link with the Presence of Clouds in Tropical Regions}, journal={EAI Endorsed Transactions on Industrial Networks and Intelligent Systems}, volume={10}, number={3}, publisher={EAI}, journal_a={INIS}, year={2023}, month={8}, keywords={Satellite communications, Free-space laser communications (lasercom), Cloud attenuation, Atmospheric turbulence, Site diversity technique}, doi={10.4108/eetinis.v10i3.3327} }- Thang Nguyen
Hoa Le
Hien Pham
Ngoc Dang
Year: 2023
Availability of Free-Space Laser Communication Link with the Presence of Clouds in Tropical Regions
INIS
EAI
DOI: 10.4108/eetinis.v10i3.3327
Abstract
Free-space laser communication (lasercom), a great application of using free-space optics (FSO) for satellite communication, has been gaining significant attraction. However, despite of great potential of lasercom, its performance is limited by the adverse effects of atmospheric turbulence and cloud attenuation, which directly affect the quality and availability of lasercom links. The paper, therefore, concentrates on evaluating the cloud attenuation in the FSO downlinks between satellite and ground stations in tropical regions. The meteorological ERA-Interim database provided by the European Center for Medium-Range Weather Forecast (ECMWF) from 2015 to 2020 is used to get the cloud database in several areas in tropical regions. This study proposed a novel probability density function of cloud attenuation, which is validated by using a well-known curve-fitting method. Moreover, we derive a closed-form of satellite-based FSO link availability by applying the site diversity technique to improve the system performance. Numerical results, which demonstrate the urgency of the paper, reveal that the impact of clouds on tropical regions is more severe than in temperate regions.
Copyright © 2023 T. V. Nguyen et al., licensed to EAI. This is an open access article distributed under the terms of the Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/), which permits unlimited use, distribution and reproduction in any medium so long as the original work is properly cited.
