Availability of Free-Space Laser Communication Link with the Presence of Clouds in Tropical Regions

Authors

  • Thang Nguyen Học Viện Công Nghệ Bưu Chính Viễn Thông Cơ sở TP. Hồ Chí Minh image/svg+xml
  • Hoa Le Học Viện Công Nghệ Bưu Chính Viễn Thông Cơ sở TP. Hồ Chí Minh image/svg+xml
  • Hien Pham Học Viện Công Nghệ Bưu Chính Viễn Thông Cơ sở TP. Hồ Chí Minh image/svg+xml
  • Ngoc Dang Học Viện Công Nghệ Bưu Chính Viễn Thông Cơ sở TP. Hồ Chí Minh image/svg+xml

DOI:

https://doi.org/10.4108/eetinis.v10i3.3327

Keywords:

Satellite communications, Free-space laser communications (lasercom), Cloud attenuation, Atmospheric turbulence, Site diversity technique

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.

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References

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Published

23-08-2023

How to Cite

Nguyen, T., Le, H., Pham, H., & Dang, N. (2023). Availability of Free-Space Laser Communication Link with the Presence of Clouds in Tropical Regions. EAI Endorsed Transactions on Industrial Networks and Intelligent Systems, 10(3), e1. https://doi.org/10.4108/eetinis.v10i3.3327