The European Space Agency's (ESA) Synthetic Aperture Radar (SAR) instruments have been flown on board ERS-1, ERS-2 and the Advanced SAR (ASAR) on board Envisat satellite. The ERS-1, ERS-2 and Envisat satellites, launched in 1991, 1995 and 2002 respectively, are ESA multi-payload, Earth observation satellites.

This dataset collection contains Synthetic Aperture Radar (SAR) data from the European Remote Sensing (ERS) satellites ERS-1 and ERS-2, and Advanced SAR data from Envisat. The ERS-1 mission began in 1991 and ended in 2000, and ERS-2 and Envisat are still ongoing. SAR provides high resolution images, ocean wave spectra data and wind direction vector data. They are available through the NEODC to UK based students only.