Introduction to Sentinel 1: SAR(Synthetic-Aperture Radar) Data

Photo by ActionVance on Unsplash

Synthetic Aperture Radar(SAR) data are images of the earth’s landscape created by the reflective signals, called back-scatter, that return to the radar. SAR emits its own energy to retrieve later, making it an active sensor. In contrast, passive sensors such as optical images retrieve the information reflected from another source(such as the sun).