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Optical Engineering

Planning constraints of low grazing altitude GEO-LEO laser links based on in-orbit data
Author(s): Uwe Sterr; Daniel Dallmann; Frank Heine; Daniel Tröndle; Rolf Meyer; Michael Lutzer; Edoardo Benzi
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Paper Abstract

Part of the operational concept for laser communication networks such as the European data relay system is planning constraints. In addition to hard constraints such as angular range of the actuators, there is also the atmosphere, which has a gradual increasing impact as the distance between laser beam path and earth decreases. The shortest distance between the laser beam path and the surface of the earth is called “grazing altitude.” The atmosphere impacts spatial acquisition as well as communication performance. In-orbit measurement data of geostationary orbit–low-Earth orbit (GEO-LEO) links between two laser communication terminals (LCT) developed by TESAT-Spacecom, Germany, in the frame of Alphasat TDP1 optical GEO-relay demonstration program are presented. Planning constraint guidelines are formulated based on the observed influence. TESAT-Spacecom’s LCTs use a highly sensitive and high-performance coherent transmission technology and a beaconless spatial acquisition system.

Paper Details

Date Published: 10 August 2016
PDF: 5 pages
Opt. Eng. 55(11) 111608 doi: 10.1117/1.OE.55.11.111608
Published in: Optical Engineering Volume 55, Issue 11
Show Author Affiliations
Uwe Sterr, ST2C-Satellite Telecommunication Consulting Co. (Germany)
Daniel Dallmann, Tesat-Spacecom GmbH & Co. KG (Germany)
Frank Heine, Tesat-Spacecom GmbH & Co. KG (Germany)
Daniel Tröndle, Tesat-Spacecom GmbH & Co. KG (Germany)
Rolf Meyer, Deutsches Zentrum für Luft- und Raumfahrt e.V. (Germany)
Michael Lutzer, Deutsches Zentrum für Luft- und Raumfahrt e.V. (Germany)
Edoardo Benzi, European Space Research and Technology Ctr. (The Netherlands)


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