|
KA-SAT is a high throughput telecommunications satellite owned by Eutelsat. The satellite provides broadband Internet access services across Europe and also a small area of the Middle East.〔 It is positioned at 9°E, joining Eurobird 9A Ku band satellite. KA-SAT was manufactured by EADS Astrium, based on the Eurostar E3000 platform, with a total weight of 6 tons.〔 It was launched by Proton in December 2010. The satellite is named after the Ka band frequency, which is used on the spacecraft. ==The spacecraft== The spacecraft is equipped with four multi-feed deployable antennas with enhanced pointing accuracy and a high efficiency repeater. It is configured with 82 spotbeams,〔 making it the most advanced multi-spot satellite designed in the world to date. Each spotbeam is associated with a 237 MHz wide transponder, allowing a data bit rate througput of 475 Mbit/s per spot. The spacecraft power is about 14 kW, the payload DC power is 11 kW. The solar array power provides up to 16 kW. The payload mass is about 1000 kg, the dry mass is about 3170 kg, the launch mass was 6100 kg. The manoeuvre lifetime in orbit is estimated to 16 years. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「KA-SAT」の詳細全文を読む スポンサード リンク
|