Sentinel-1 is the first of the five families of Sentinel missions that the European Space Agency (ESA) is developing for Copernicus operational applications.
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The SENTINEL-1 mission will carry a Synthetic Aperture Radar (SAR) instrument. This will ensure continuity of data from the ERS, ENVISAT and Canada's RADARSAT missions.
The objective of the Sentinel 1 mission is to provide continuity of SAR data for land and ocean services for different applications. These applications include:
- monitoring sea ice zones and the arctic environment
- surveillance of marine environment
- monitoring land surface motion risks
- mapping of land surfaces; forest, water and soil, agriculture
- mapping in support of humanitarian aid in crisis situations
Sentinel-1A, the first of the constellation of two satellites, will be ready for launch this spring. Sentinel-1B, will follow in 2015.
Source: ESA Sentinel online