24 February 2017 Digital optical feeder links system for broadband geostationary satellite
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Abstract
An optical link based on a multiplex of wavelengths at 1.55μm is foreseen to be a valuable solution for the feeder link of the next generation of high-throughput geostationary satellite. The main satellite operator specifications for such link are an availability of 99.9% over the year, a capacity around 500Gbit/s and to be bent-pipe. Optical ground station networks connected to Terabit/s terrestrial fibers are proposed. The availability of the optical feeder link is simulated over 5 years based on a state-of-the-art cloud mask data bank and an atmospheric turbulence strength model. Yearly and seasonal optical feeder link availabilities are derived and discussed. On-ground and on-board terminals are designed to be compliant with 10Gbit/s per optical channel data rate taking into account adaptive optic systems to mitigate the impact of atmospheric turbulences on single-mode optical fiber receivers. The forward and return transmission chains, concept and implementation, are described. These are based on a digital transparent on-off keying optical link with digitalization of the DVB-S2 and DVB-RCS signals prior to the transmission, and a forward error correcting code. In addition, the satellite architecture is described taking into account optical and radiofrequency payloads as well as their interfaces.
Conference Presentation
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Sylvain Poulenard, Sylvain Poulenard, Alexandre Mège, Alexandre Mège, Christian Fuchs, Christian Fuchs, Nicolas Perlot, Nicolas Perlot, Jerome Riedi, Jerome Riedi, Josep Perdigues, Josep Perdigues, } "Digital optical feeder links system for broadband geostationary satellite", Proc. SPIE 10096, Free-Space Laser Communication and Atmospheric Propagation XXIX, 1009614 (24 February 2017); doi: 10.1117/12.2255987; https://doi.org/10.1117/12.2255987
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