Earth optical satellite imagery is a way to see the world it would look to the human eye. It does not reveal much of the data that the Earth holds, especially as it is at the mercy of clouds. Synthetic Aperture Radar (SAR) on the other hand, can image at both day and night, in almost all weather conditions. Moreover, because SAR sensors are sensitive to the “roughness” and “wetness” of the target surface, they offer us insights into crop cover type, marine pollution sources and even forest biomass.
