Recently ISRO in collaboration with NASA has completed the development of Synthetic Aperture Radar (SAR) which has the capability of producing extremely high-resolution images for joint earth observation satellite mission.

NASA-ISRO SAR (NISAR)

NISAR a joint collaboration for the dual-frequency L-Band and S-Band SAR for the earth observation. It is the first satellite mission which will use two different radar frequencies called L-band and S-band. These radar frequencies will be used to measure the changes in Earth’s surface less than a centimetre across. NISAR mission will be launched in 2022 from the ISRO’s Sriharikota spaceport in Andhra Pradesh. The payload was shipped from the Ahmedabad-based Space Applications Centre (SAC) to the Jet Propulsion Laboratory (JPL) of NASA.

About ISRO-NASA Collaboration

National Aeronautics and Space Administration is providing the L-band SAR for the NISAR mission. SAR is a sophisticated information-processing technique that is used to produce high-resolution images. It is a high-rate communication subsystem for the GPS receivers, science data, payload data subsystem and a solid-state recorder. ISRO, on the other hand is providing the S-band radar, spacecraft bus, launch vehicle and other launch services associated with the mission. Indian Space Research Organisation is aimed at making global measurements of the causes & consequences of the land surface change with the help of radar imaging. S-band SAR payload was flagged off by Secretary of the Department of Space & ISRO Chairman, K Sivan on 4th March 2021.

Backdrop

Both NASA and ISRO space agencies has inked a deal to develop and launch the NISAR satellite on 30th September 2014.

Application of NISAR

It will provide a means of highly spatial and temporally complex processes such as ecosystem disturbances, ice sheet collapses and natural hazards like volcanoes, landslides, earthquakes and tsunamis. NISAR Mission will also measure the changing ecosystems of Earth, dynamic surfaces & ice masses. The mission will also provide information regarding the biomass, natural hazards, groundwater and sea level rise.

ISRO & NASA develops Radar for Joint Earth Observation Satellite Mission ISRO & NASA develops Radar for Joint Earth Observation Satellite Mission