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Optical Satellite Downlinks to Optical Ground Stations and High-Altitude Platforms

Giggenbach, Dirk and Horwath, Joachim and Epple, Bernhard (2007) Optical Satellite Downlinks to Optical Ground Stations and High-Altitude Platforms. In: Proceedings of the 16th IST Mobile and Wireless Communications Summit. 16th IST Mobile and Wireless Summit, 1-5 July, 2007, Budapest, Hungary. ISBN 978-963-8111-66-1.

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Earth-observation (EO) satellite missions using highresolution optical or radar sensors are producing an immense amount of data which needs to be send down to earth. The fraction of satellite operational time in future missions is therefore clearly limited by the downlink-capability. The current X-Band architecture is facing its technological limitations in terms of data rate while causing increased demand on antenna sizes and transmit power. This bottleneck can be overcome by direct optical downlinks from EO-satellites to the ground with multi-gigabit data rates. According optical satellite terminals will be extremely small and light-weight and will require few transmit power, but one drawback is the link blockage by thick clouds. This can be overcome either by ground station diversity and careful site selection or by using optical terminals onboard high altitude platforms which serve as relays-stations for the satellite. Here we present feasibility and expected performance of these two optical scenarios and propose according space and ground station architectures.

Document Type:Conference or Workshop Item (Speech)
Title:Optical Satellite Downlinks to Optical Ground Stations and High-Altitude Platforms
AuthorsInstitution or Email of Authors
Giggenbach, DirkUNSPECIFIED
Horwath, JoachimUNSPECIFIED
Epple, BernhardUNSPECIFIED
Date:August 2007
Journal or Publication Title:Proceedings of the 16th IST Mobile and Wireless Communications Summit
Refereed publication:Yes
In ISI Web of Science:No
Keywords:high altitude platforms, optical freespace links, optical ground stations, optical satellite downlinks, KNOCGOP
Event Title:16th IST Mobile and Wireless Summit
Event Location:Budapest, Hungary
Event Type:international Conference
Event Dates:1-5 July, 2007
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W KN - Kommunikation/Navigation
DLR - Research area:Space
DLR - Program:W KN - Kommunikation/Navigation
DLR - Research theme (Project):W - Vorhaben Multimedia Satellitennetze (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Communication and Navigation > Digital Networks
Deposited By: Florian Moll
Deposited On:30 Aug 2007
Last Modified:12 Dec 2013 20:27

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