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Analysis of power scintillation and fading margin in the LEO-ground downlink with the OSIRISv1 laser terminal on Flying Laptop and the DLR optical ground station Oberpfaffenhofen

Moll, Florian und Giggenbach, Dirk und Schmidt, Christopher und Fuchs, Christian (2022) Analysis of power scintillation and fading margin in the LEO-ground downlink with the OSIRISv1 laser terminal on Flying Laptop and the DLR optical ground station Oberpfaffenhofen. In: Environmental Effects on Light Propagation and Adaptive Systems V 2022. SPIE Press. Environmental Effects on Light Propagation and Adaptive Systems V, 2022-09-05 - 2022-09-08, Berlin. doi: 10.1117/12.2647830. ISBN 978-151065535-5. ISSN 0277-786X.

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Offizielle URL: https://spie.org/Publications/Proceedings/Paper/10.1117/12.2647830?origin_id=x4325&start_volume_number=12200

Kurzfassung

Free-space optical communications is an emerging field for a variety of use cases in the domain of satellite communications. It is deployed in Earth observation missions to downlink payload data, in telecom missions (GEO or LEO based) to up- and downlink data streams and in quantum communication missions to implement the needed quantum and classical channels. Part of the propagation path goes through the atmosphere where the propagating optical wave experiences wave-front distortions and consequently distortions of the irradiance field. These distortions lead to scintillation of the optical power in the focal plane of the optical ground stations receiver front-end which can cause signal outages. Characterization of power scintillation is very important to assess the needed fading margin in the communication link design. Thus, these power scintillations are matter of investigation in this paper. Measurement campaigns were conducted to experimentally characterize the power scintillation. Received power was measured with a 40 cm telescope located at the DLR site Oberpfaffenhofen, i.e. in a suburban area. Satellite source is the OSIRISv1 laser terminal on the LEO satellite Flying Laptop. The campaigns were conducted in the years 2018, 2019 and 2020 where data of 15 passes could successfully be recorded. The power scintillation statistics are analyzed over elevation. The power scintillation index shows different behavior from pass to pass which is due to the different environmental conditions during the individual passes. Median values and quartiles of power scintillation index over elevation are given. Furthermore, statistics of fading margin for link budget calculation are derived. Both can be used to define best, nominal and worst cases in the design of the LEO-ground communication link.

elib-URL des Eintrags:https://elib.dlr.de/191905/
Dokumentart:Konferenzbeitrag (Vortrag)
Titel:Analysis of power scintillation and fading margin in the LEO-ground downlink with the OSIRISv1 laser terminal on Flying Laptop and the DLR optical ground station Oberpfaffenhofen
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Moll, FlorianFlorian.Moll (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Giggenbach, DirkDirk.Giggenbach (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Schmidt, Christopherchristopher.schmidt (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Fuchs, ChristianChristian.Fuchs (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Datum:2022
Erschienen in:Environmental Effects on Light Propagation and Adaptive Systems V 2022
Referierte Publikation:Ja
Open Access:Ja
Gold Open Access:Nein
In SCOPUS:Ja
In ISI Web of Science:Ja
DOI:10.1117/12.2647830
Verlag:SPIE Press
Name der Reihe:Proceedings of SPIE
ISSN:0277-786X
ISBN:978-151065535-5
Status:veröffentlicht
Stichwörter:free-space optical communications, satellite communications, scintillation, optical turbulence, channel modelling, Flying Laptop, OSIRISv1, fading margin
Veranstaltungstitel:Environmental Effects on Light Propagation and Adaptive Systems V
Veranstaltungsort:Berlin
Veranstaltungsart:internationale Konferenz
Veranstaltungsbeginn:5 September 2022
Veranstaltungsende:8 September 2022
Veranstalter :5-8 September 2022
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Raumfahrt
HGF - Programmthema:Kommunikation, Navigation, Quantentechnologien
DLR - Schwerpunkt:Raumfahrt
DLR - Forschungsgebiet:R KNQ - Kommunikation, Navigation, Quantentechnologie
DLR - Teilgebiet (Projekt, Vorhaben):R - Quantenkryptografie mit Satelliten, R - Project PROSIRIS
Standort: Oberpfaffenhofen
Institute & Einrichtungen:Institut für Kommunikation und Navigation > Optische Satellitenlinks
Hinterlegt von: Moll, Florian
Hinterlegt am:08 Dez 2022 19:02
Letzte Änderung:12 Jul 2024 08:38

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