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First Sentinels

机译:第一哨兵

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摘要

The European Space Agency is preparing to begin development work on the first three spacecraft for its Global Monitoring for Environment and Security system as it gears up for a second-phase expansion plan that is expected to more than double the initial fleet. Thales Alenia Space was awarded a €305-million ($488-million) contract Apr. 14 for Sentinel 3, the second of five dedicated Sentinel satellites that will form the backbone of the space segment of GMES, which is being developed under ESA responsibility. To be launched in 2012 atop a Vegaclass launcher, the 1.2-metric-ton Sentinel 3 will provide oceanography and land vegetation monitoring data. The satellite will be equipped with an ocean/land color instrument, a sea/ land temperature radiometer, a radar altimeter and a microwave radiometer. The altimeter will provide high-inclination data to ensure continuity with the agency's Envisat spacecraft, but at higher performance and availability levels. Thales Alenia will be responsible for the color monitor and altimeter, as well as satellite integration.
机译:欧洲航天局正准备开始其全球环境与安全监测系统的前三架航天器的开发工作,因为它正在为第二阶段的扩展计划做准备,该计划预计将使初始机队增加一倍以上。 Thales Alenia Space公司已于4月14日获得一份价值3.05亿欧元(4.88亿美元)的Sentinel 3合同,这是五颗专用Sentinel卫星中的第二颗,将构成GMES空间部分的骨干,该卫星正在ESA的领导下进行开发。 1.2公吨重的Sentinel 3将于2012年在Vegaclass发射器上发射,将提供海洋学和陆地植被监测数据。该卫星将配备海洋/陆地颜色仪,海洋/陆地温度辐射计,雷达高度计和微波辐射计。高度计将提供高倾角数据,以确保与该机构的Envisat航天器的连续性,但具有更高的性能和可用性水平。 Thales Alenia将负责彩色监视器和高度计以及卫星集成。

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