Airbus Defence and Space has signed a contract, worth around 285 million euros with the European Space Agency (ESA) to deliver two further optical satellites for the European Copernicus programme.
As part of the Sentinel-2 Earth observation satellite system, these two new models, called “Sentinel-2C” and “Sentinel-2D”, will observe the environment and land surfaces and continue from 2021 with the measurements carried out by the first two flight units as part of the European Copernicus programme. As prime contractor, Airbus Defence and Space will lead an industrial consortium of more than 50 companies from 17 European countries and the USA.
The Sentinel-2 satellites deliver optical images from a height of 786 km with a resolution of 10, 20 and 60 metres at an image width of 290 km. These images are produced in 13 spectral bands, from the visible to the short-wave infrared range of the electromagnetic spectrum. As part of Copernicus, the Sentinel-2 satellites make a significant contribution to meeting Earth observation data requirements in the areas of land use, water quality, agriculture and forestry, land management, natural disasters (floods, forest fires, landslides, erosion) and humanitarian aid. Environmental observation in coastal areas likewise forms part of these activities, as does glacier, ice and snow monitoring.
Sentinel-2 is also capable of using another ESA programme, the European Data Relay System (EDRS). EDRS-SpaceDataHighway will be a network of laser communication payloads on geostationary satellites and low Earth orbit satellites. The system will provide secure and fast communication services for the Sentinel-1 and Sentinel-2 satellites. It will ensure the timely availability of data particularly for time-critical applications such as environmental monitoring, emergency response and security missions.
The first satellite of this family, Sentinel-2A, lifted off on 23 June 2015 on a Vega launcher from the European spaceport in Kourou, French Guiana and is now in service. To date, over 7.000 products are available for download, cumulating a total volume of 35 TB, while over 57.000 products equivalent to 276 TB have been downloaded by the user communities. Since mid-January a step increase in the download activity was observed, reaching a volume of 7 TB distributed daily. The development of Sentinel-2B is progressing in full swing for a launch late this year.
For Sentinel-2, Airbus Defence and Space in Friedrichshafen (Germany) is responsible for the system design, the platform and satellite integration and testing. Airbus Defence and Space in Toulouse (France) is delivering the Multispectral Instrument (MSI), while Airbus Defence and Space in Madrid (Spain) is responsible for the mechanical satellite structure for producing the thermal equipment and cable loom, and for the delivery of power, energy management and high speed data acquisition units.