KA-SAT
Eutelsat KA- SAT 9A is a commercial communications satellite of Eutelsat provides broadband Internet for Europe and the Middle East from the geostationary position 9 ° E in the Ka band. For better use of its frequency 237 MHz transponder it uses 82 over Europe distributed spot beams, each with a capacity of 475 Mb / s
The satellite was originally the name KA- SAT. He was placed in a geostationary / polar orbit on 26 December 2010 at 21:51 UTC by a Proton -M carrier rocket from Baikonur launch site by the company International Launch Services (ILS ). After nine hours and twelve minutes, the spacecraft separated from the final drive stage and got into a geostationary transfer orbit. The contract awarded to EADS Astrium for the construction took place in January 2008. Originally scheduled for December 20 launch had been postponed earlier because the flights of the carrier rocket Proton-M stopped after the loss of three Russian GLONASS navigation satellites on 5 December 2010 for the time being had been.
The three -axis stabilized satellite is equipped with 82 Ka-band spot beam transponders and will provide 9 degrees East Europe and the Middle East with high-speed Internet for Eutelsat's Tooway service from the position. Seven of the spot beams for the supply of Germany are provided. The overall data throughput should be above 70 Gbit / s, each spot beam a capacity of 900 MBit / s provides, which are divided into a return channel. For the full bandwidth of a single connection (20 Mbit / s downlink, 6 Mbit / s uplink) is sufficient on the ground a 0.77 m antenna.
The satellite has four multi-spot antennas with deployable reflectors, each 2.6 m in diameter and a high-precision navigation and positioning system, which allows him an optimized cover and multiple use of frequencies between non-adjacent cells. For the operation of the transponder 800 m microwave conductors are laid in the satellite. To cope with the amount of data Eutelsat built on a distributed network of eight earth stations (gateways ) and two back-up stations, each equipped with a 9.1 m antenna and connected via a fiber optic ring with the central control center in Turin SkyPark.
Operations, the ground-based network of SKYLOGIC, a subsidiary of Eutelsat. One of the gateways is in Berlin -Wannsee near the Helmholtz Institute for Materials and Energy. It was built on the basis of Satellitenbuses Euro E3000 EADS Astrium and has a design life of 15 years.
March 1, 2012 Eutelsat has unified the names of its satellites around the brand name.