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Atmospheric absorption and scattering impact on optical satellite-ground links

Giggenbach, Dirk and Shrestha, Amita (2022) Atmospheric absorption and scattering impact on optical satellite-ground links. International Journal of Satellite Communications and Networking, 40 (2), pp. 157-176. Wiley. doi: 10.1002/sat.1426. ISSN 1542-0973.

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Official URL: https://onlinelibrary.wiley.com/doi/10.1002/sat.1426

Abstract

Free-space radio-frequency (RF) communication links for intersatellite or satellite-to-ground communications are getting increasingly constraint by the insufficient spectrum availability and limited data rate of RF technology. With the advent of large satellite mega-constellation networks for global communications coverage, this limitation of classical RF communication becomes even more critical. Therefore, the establishment of point-to-point free-space optical link technology (FSO) in space will become of paramount importance in future systems, where the application will be for data-relays links, or for mega-constellations inter-satellite links, as well as for direct data downlinks, or from deep-space probes to ground. Further advantages of optical FSO - besides spectrum availability - is its increased power efficiency, higher data rates, avoidance of interference, and inherent protection against interception. When, however, these optical communication links have to pass through Earth's atmosphere, attenuation and scattering effects do influence the signal transmission. In this publication, we investigate the effects of atmospheric attenuation, including the effects of molecular absorption as well as aerosol scattering and absorption, for typical wavelength regions used for FSO, dependent on the link geometries. Based on transmission-simulation databases, we show useful spectral ranges and their specific attenuation strength. Free spectral transmission windows dependent on atmospheric quality and elevation angle are identified for reliable and efficient use of the optical transmission technology in space applications.

Item URL in elib:https://elib.dlr.de/144522/
Document Type:Article
Title:Atmospheric absorption and scattering impact on optical satellite-ground links
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Giggenbach, DirkDirk.Giggenbach (at) dlr.dehttps://orcid.org/0000-0003-1720-3464
Shrestha, AmitaAmita.Shrestha (at) dlr.deUNSPECIFIED
Date:2022
Journal or Publication Title:International Journal of Satellite Communications and Networking
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:40
DOI :10.1002/sat.1426
Page Range:pp. 157-176
Editors:
EditorsEmailEditor's ORCID iD
Evans, BarryUniversity of Surrey, Great BritainUNSPECIFIED
Publisher:Wiley
Series Name:Wiley Online Library
ISSN:1542-0973
Status:Published
Keywords:aerosol scattering, atmospheric attenuation, direct-to-Earth communication, free-space optics,molecular absorption lines, optical space-ground links, KNOCGOP
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Communication, Navigation, Quantum Technology
DLR - Research area:Raumfahrt
DLR - Program:R KNQ - Communication, Navigation, Quantum Technology
DLR - Research theme (Project):R - OSIRIS Future
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Communication and Navigation > Satellite Networks
Deposited By: Giggenbach, Dr.-Ing. Dirk
Deposited On:08 Dec 2021 08:57
Last Modified:24 Jun 2022 09:48

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