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4 March 2019 In orbit perfomance of tesat LCTs
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Proceedings Volume 10910, Free-Space Laser Communications XXXI; 109100U (2019)
Event: SPIE LASE, 2019, San Francisco, California, United States
With the start of the European Data Relay Service (EDRS) in June 2016, laser communication in space has entered a commercial application. The focus of the EDRS laser communication system is the low latency relay of earth observation (E/O) data from low earth orbiting space crafts. The anchor customers for EDRS in its initial phase are the Sentinel spacecrafts, constantly generating E/O data products in the framework of the European Union´s Copernicus Program. The vast majority of these data are in open access for the general public. Tesat is contracted for trending analysis and in orbit maintenance for the four Sentinel LCTs. The standard data delivery from the Sentinel 1 and Sentinel 2 spacecrafts is via X-band to polar stations and Italy and Spain, however using a LCT-GEO relay creates a “virtual ground station” and enables data transfer were no RF ground station is in the field of view of the space craft.
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Frank Heine, Alicia Sánchez-Tercero, Patricia Martin-Pimentel, Nils Höpcke, David Hasler, and Herwig Zech "In orbit perfomance of tesat LCTs", Proc. SPIE 10910, Free-Space Laser Communications XXXI, 109100U (4 March 2019);

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