Optimization and throughput estimation of optical ground networks for LEO-downlinks, GEO-feeder links and GEO-relays

Christian Fuchs; Sylvain Poulenard; Nicolas Perlot; Jerome Riedi; Josep Perdigues

doi:10.1117/12.2254795

24 February 2017 Optimization and throughput estimation of optical ground networks for LEO-downlinks, GEO-feeder links and GEO-relays

Christian Fuchs, Sylvain Poulenard, Nicolas Perlot, Jerome Riedi, Josep Perdigues

Author Affiliations +

Proceedings Volume 10096, Free-Space Laser Communication and Atmospheric Propagation XXIX; 1009612 (2017) https://doi.org/10.1117/12.2254795
Event: SPIE LASE, 2017, San Francisco, California, United States

Abstract

Optical satellite communications play an increasingly important role in a number of space applications. However, if the system concept includes optical links to the surface of the Earth, the limited availability due to clouds and other atmospheric impacts need to be considered to give a reliable estimate of the system performance. An OGS network is required for increasing the availability to acceptable figures. In order to realistically estimate the performance and achievable throughput in various scenarios, a simulation tool has been developed under ESA contract. The tool is based on a database of 5 years of cloud data with global coverage and can thus easily simulate different optical ground station network topologies for LEO- and GEO-to-ground links. Further parameters, like e.g. limited availability due to sun blinding and atmospheric turbulence, are considered as well. This paper gives an overview about the simulation tool, the cloud database, as well as the modelling behind the simulation scheme. Several scenarios have been investigated: LEO-to-ground links, GEO feeder links, and GEO relay links. The key results of the optical ground station network optimization and throughput estimations will be presented. The implications of key technical parameters, as e.g. memory size aboard the satellite, will be discussed. Finally, potential system designs for LEO- and GEO-systems will be presented.

Conference Presentation

Citation Download Citation

Christian Fuchs, Sylvain Poulenard, Nicolas Perlot, Jerome Riedi, and Josep Perdigues "Optimization and throughput estimation of optical ground networks for LEO-downlinks, GEO-feeder links and GEO-relays", Proc. SPIE 10096, Free-Space Laser Communication and Atmospheric Propagation XXIX, 1009612 (24 February 2017); https://doi.org/10.1117/12.2254795

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