![]() ![]() leaf area index, leaf chlorophyll content, leaf water content). CORINE land cover maps update, soil sealing maps, forest area maps) Generic land cover, land use and change detection maps (e.g.To meet the user needs, the Sentinel-2 satellite data will support the operational generation of the following high-level products: spatial planning for Soil Thematic Strategy, Natura 2000 and Ramsar Convention, Water Framework Directive), European civil protection, common agricultural policy, development and humanitarian aid, and EU Common Foreign & Security Policy. The overall GMES user requirements of the EU member states call for optical observation services in the areas of Global Climate Change (Kyoto Protocol and ensuing regulations), sustainable development, European environmental policies (e.g. It is jointly implemented by the EC (European Commission) and ESA (European Space Agency) for global land observation (data on vegetation, soil and water cover for land, inland waterways and coastal areas, and also provide atmospheric absorption and distortion data corrections) at high resolution with high revisit capability to provide enhanced continuity of data so far provided by SPOT-5 and Landsat-7. Sentinel-2 is a multispectral operational imaging mission within the GMES (Global Monitoring for Environment and Security) program. Copernicus: Sentinel-2 - The Optical Imaging Mission for Land Services Due to their design life of seven years, Sentinel-2A and 2B are set to be replaced by Sentinel-2C and 2D in 20 respectively. They provide X-band MSI data downlink at 560 Mbit/s, and telemetry, tracking, and command (TT&C) data link with 64 kbit/s uplink and 2 Mbit/s downlink. Onboard this bus in addition to the MSI is radio frequency communications. Sentinel-2 uses the AstroBus-L of EADS (European Aeronautic Defence and Space Company) Astrium. They orbit at an altitude of 786 km with a period of 101 minutes. The two satellites follow the same sun-synchronous orbit with an inclination of 98.6° but are 180° out of phase. The Sentinel-2 satellites have a 5-day revisit time between them, each with a swath of 290 km. The MSI has 13 bands: three visible bands with a spatial resolution of 10 m, one visible band with a resolution of 60 m, three NIR (Near-Infrared) bands with a resolution of 20 m, and six SWIR (Short Wave Infrared) bands with a resolution of 60 m. This instrument comprises a three-mirror anastigmat (TMA) telescope to collect and focus light, a beam splitter to separate visible and near-infrared (VNIR) from short-wave infrared (SWIR), two focal planes with 12 detectors on each for the two different radiation types, a diffuser for radiometric calibration, and a calibration and shutter mechanism (CSM) to protect the instrument from sunlight at launch. Both satellites are identical and have a Multispectral Instrument (MSI) onboard. The Sentinel-2 satellites are used for monitoring inland and coastal water quality, and the management of crops and forests. ![]()
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