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Proceedings Paper

Ground-to-satellite bidirectional laser links for validation of atmospheric turbulence model
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Paper Abstract

The European Space Agency (ESA) has launched the geostationary data-relay satellite ARTEMIS with one of its payloads being a laser communication terminal (LCT). The LCT is used within the semiconductor-laser intersatellite link experiment (SILEX) to receive Earth observation data transmitted from a similar LCT onboard the SPOT-4 satellite. To support SILEX, ESA has also reached an agreement with the Instituto de Astrofisica de Canarias (JAC) to build the Optical Ground Station (OGS), in the Teide Observatory ofthe IAC. ARTEMIS and the OGS are an ideal and unique test-bed to study and characterise laser beam propagation through atmospheric turbulence. Theoretical models of laser beam propagation through atmospheric turbulence have been reviewed and developed, to predict the performance of the optical links from the propagation and communication point of view. Special effort has been invested in modelling the uplink effects. Optical link experiments have been planned in detail, to gather the necessary data required to be statistically representative, to compare the results with theoretical predictions and to validate and adjust the theoretical models. This comparison will pave the way towards the implementation of deep-space laser communication links. The first results ofthese experiments, presenting the theoretical models, analysing separately downlink and uplink measurements, and comparing the data with the theoretical predictions, are presented.

Paper Details

Date Published: 27 January 2004
PDF: 12 pages
Proc. SPIE 5160, Free-Space Laser Communication and Active Laser Illumination III, (27 January 2004); doi: 10.1117/12.506738
Show Author Affiliations
Marcos Reyes, Instituto de Astrofisica de Canarias (Spain)
Adolfo Comeron, Univ. Politecnica de Catalunya (Spain)
Angel Alonso, Instituto de Astrofisica de Canarias (Spain)
Alejandro Rodriguez, Univ. Politecnica de Catalunya (Spain)
Juan Antonio Rubio, Univ. Politecnica de Catalunya (Spain)
Victor Federico Dios, Univ. Politecnica de Catalunya (Spain)
Sergio Chueca, Instituto de Astrofisica de Canarias (Spain)
Zoran Sodnik, European Space Agency (Netherlands)

Published in SPIE Proceedings Vol. 5160:
Free-Space Laser Communication and Active Laser Illumination III
David G. Voelz; Jennifer C. Ricklin, Editor(s)

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