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Sentinel-1 is a space mission funded by the European Union and carried out by the ESA within the Copernicus Programme, consisting of a constellation of two satellites. The payload of Sentinel-1 is a Synthetic Aperture Radar in C-band that provides continuous imagery (day, night and all weather). On 12 March 2010, the European Space Agency and Thales Alenia Space signed a contract worth €270 million to build the second satellite of the Sentinel-1 pair. First Sentinel 1A arrived at launch site in Kourou, French Guiana on 25 February.〔(Thales Alenia Space. Sentinel 1A arrives at launch site in French Guiana )〕 Sentinel-1A satellite was launched on 3 April 2014, by a Soyuz Rocket.〔« Arianespace boosts Sentinel-1A Earth observation satellite into orbit », Arianespace Press Release, 3 avril 2014, (Arianespace Twitter )〕 ==Instruments== Sentinel-1 spacecraft are designed to carry a single C-band SAR, data storage capacity of 1,410 Gbit and 520 Mbit/s X-band downlink capacity. 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「Sentinel-1」の詳細全文を読む スポンサード リンク
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