what is radarsat
RADARSAT-1 is an advanced Earth observation satellite project developed by the Canadian Space Agency (CSA) to monitor environmental change and to support resource sustainability. NASA launched RADARSAT-1 in exchange for access to the satellite on a pro rata basis through its Alaska SAR Facility (ASF).At the heart of RADARSAT-1 is an advanced radar sensor called Synthetic Aperture Radar (SAR).SAR is a microwave instrument which sends pulsed signals to the Earth and processes the received reflected pulses.ASA launched RADARSAT-1 in exchange for access to the satellite on a pro rata basis through its Alaska SAR Facility (ASF). At the heart of RADARSAT-1 is an advanced radar sensor called Synthetic Aperture Radar (SAR).