The PROBA-V mission: the space segment
The PROBA-V mission: the space segment
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DOI：
10.1080/01431161.2014.883098
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发表时间：
2014-04
影响因子：
3.4
通讯作者：
M. François;S. Santandrea;K. Mellab;D. Vrancken;J. Versluys
中科院分区：
文献类型：
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作者：
M. François;S. Santandrea;K. Mellab;D. Vrancken;J. Versluys
PROBA-V（机载自主项目 – 植被）是 ESA（欧洲航天局）在该机构通用支持技术计划（GSTP）框架内开发的一项任务，致力于地球植被观测，为 SPOT（地球观测卫星）4 和 5 VEGETATION 有效载荷提供数据连续性，作为 ESA Sentinel-3 任务的间隙填充。 PROBA-V空间段基于重约140公斤的三轴稳定PROBA小卫星平台，配备最先进的紧凑型4波段大视场多光谱成像仪。该仪器的光力学基于放置在光具座上的三个非常紧凑的 TMA（三镜消像散）望远镜。该仪器的海拔高度为820公里，能够在3个VNIR（可见光和近红外）波段和1个SWIR（短波红外）光谱波段对地球进行日常覆盖，VNIR最低点的空间分辨率高达100 m × 100 m。仪器原始数据将通过 X 波段发射器下行传输至瑞典基律纳的地面接收站。任务控制中心位于比利时雷杜。图像处理中心，即所谓的“用户部分”，自动访问原始数据，并负责向用户群体处理和传播数据产品。 PROBA-V 航天器于 2013 年 5 月 7 日在新型欧洲运载火箭 Vega 上发射升空。它的设计标称任务寿命为 2.5 年，可能延长至 5 年。
PROBA-V (Project for On-Board Autonomy – Vegetation) is an ESA (European Space Agency) mission developed within the framework of the Agency’s General Support Technology Programme (GSTP) devoted to the observation of the Earth’s vegetation, providing data continuity with the SPOT (Satellite pour l’Observation de la Terre) 4 and 5 VEGETATION payloads as a gap-filler to the ESA Sentinel-3 mission. The PROBA-V space segment is based on a three-axis stabilized PROBA small-satellite platform of about 140 kg equipped with a state-of-the-art compact 4-band multi-spectral imager with a large field of view. The instrument’s optomechanics is based on three very compact TMA (three mirror anastigmat) telescopes placed on an optical bench. At an altitude of 820 km, the instrument is able to provide daily coverage of the Earth in three VNIR (visible and near-infrared) bands and one SWIR (short-wave infrared) spectral band, with a spatial resolution of up to 100 m × 100 m at nadir for the VNIR. The instrument raw data will be downlinked with an X-band transmitter to the ground reception station in Kiruna, Sweden. The mission control centre is located in Redu, Belgium. The image processing centre, the so-called ‘user segment’, automatically accesses the raw data and is responsible for the processing and the dissemination of the data products towards the user community. The PROBA-V spacecraft was launched on board the new European launcher Vega on 7 May 2013. It is designed for a nominal mission lifetime of 2.5 years with a possible extension to 5 years.