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Signal Control in Optical Ground-to-Space Links

Giggenbach, Dirk (2017) Signal Control in Optical Ground-to-Space Links. [Other]

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Abstract

Optical Uplinks from Ground Stations to Receivers in Space suffer from atmospherically induced intensity scintillations and beam pointing jitter. These channel impairments limit the effective transmit aperture size and thus set a restriction to the link budget. Transmitter diversity helps to reduce Fading but at the expense of spectral efficiency and additional power. An artificial Laser Guide Star allows better knowledge of the atmospheric index-ofrefraction structure and thus - together with Adaptive Optics - complete uplink beam control seems possible in future. Another fading-reduction is withal offered from the sensitivity run of coherent- or APD-receivers in contrast to thermal-limited power detectors. This talk introduces the different techniques which have been investigated in theory and practice by the Optical Communication Groups of DLR-IKN.

Item URL in elib:https://elib.dlr.de/114839/
Document Type:Other
Title:Signal Control in Optical Ground-to-Space Links
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Giggenbach, DirkDirk.Giggenbach (at) dlr.deUNSPECIFIED
Date:11 September 2017
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:KNOCGOP optical Feeder link
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Communication and Navigation
DLR - Research area:Raumfahrt
DLR - Program:R KN - Kommunikation und Navigation
DLR - Research theme (Project):R - Vorhaben Multimedia Satellitennetze
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Communication and Navigation > Satellite Networks
Deposited By: Giggenbach, Dr.-Ing. Dirk
Deposited On:13 Nov 2017 14:37
Last Modified:31 Jul 2019 20:12

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