Sentinel-1

Sentinel-1 (S1) is the first of the Copernicus Programme satellite constellation conducted by the European Space Agency. This space mission is composed of two satellites, Sentinel-1A and Sentinel-1B, that carry a C-band synthetic-aperture radar instrument which provides a collection of data in all-weather, day or night. The first satellite, Sentinel-1A, was launched on 3 April 2014, and Sentinel-1B was launched on 25 April 2016. Both satellites lifted off from the same location in Kourou, French Guiana, and each on a Soyuz rocket. Sentinel-1C and 1D are in development with launch dates to be determined. S1 collects data at 5-meter spatial resolution and has a revisit time of 3 days. (See also GERMAN Wikipedia)

Existing data can be retrieved and accessed via the Copernicus Open Access Hub from ESA.

To see which acquisitions are planned to use this link.

We describe the folowing Sentinel-1 proceses:

• Gerneral terms
• Processing levels
• Products
  • Sigma nought
  • Gamma nought
  • Projected local incidence angle
  • Seasonal RGB composites
  • Surface soil moisture

Data Acquisition

The data acquired by the satellites are downlinked to the collaborative ground segment from where via ESA network it is being distributed to other sources like Scientific Hub and ESA Server ZAMG (Zentralanstalt für Meteorologie und Geodynamik). From ZAMG, data is pushed to the national mirror and then to the EODC storage. Sentinel-1 data at the EODC warehouse are currently available at approximately 2.5 hours after the initial signal processing by ESA (level-1 product) and 6.25 hours after the acquisition, mostly depends on the timeliness categories. Sentinel-1 level-1 data are archived on fast disks storage and backed up using a robotic tape library on a regular basis. 

EODC data acquisition strategy. Satellite data are transferred from the satellite to the Collaborative Ground Segment, then to a rolling archive system at ZAMG and stored to EODC internal storage system.