The Indian Space Research Organisation (ISRO)jointly with the US space agency (NASA)has successfully completed the development of a Synthetic Aperture Radar (SAR) which is capable of producing extremely high-resolution images for a joint Earth observation satellite mission.
It is developed by NASA-ISRO S NASA-ISRO SAR (NISAR), which is a joint collaboration between ISRO and NASA for a dual-frequency L and S-band SAR for earth observation. Both space agencies had signed a partnership in 2014 to collaborate and launch NISAR.
ISRO is providing the spacecraft bus, the S-band radar, and the launch vehicle and associated launch services for the mission. NASA is providing the mission’s L-band SAR, a high-rate communication subsystem for science data, GPS receivers, a solid-state recorder and payload data subsystem.
NISAR will provide image for highly complex area ranging from ice sheet collapses to ecosystem disturbances as well as natural hazards including tsunamis, earthquakes, landslides, and volcanoes. It will measure the Earth’s dynamic surfaces, changing ecosystems, and ice masses. It will provide information about natural hazards, biomass, groundwater, and sea-level rise and will also support a host of other applications. It will observe the ice-covered and land surfaces of Earth globally with 12-day regularity. The radar will infiltrate the darkness and clouds which will enable NISAR to collect data day and night in any form of weather.
The Earth Observation Satellite Mission has been set to launch in early 2022 from the Sriharikota in Andhra Pradesh.