NISAR Satellite Successfully Launched from Sriharikota - An ISRO- NASA joint venture

 



The NASA-ISRO Synthetic Aperture Radar (NISAR) satellite was successfully launched on Wednesday, July 30, 2025, from the Satish Dhawan Space Centre in Sriharikota, Andhra Pradesh.

The satellite was carried by the Geosynchronous Satellite Launch Vehicle (GSLV)-F16, which lifted off from the space centre’s second launch pad at 5:40 p.m. Within 18 minutes of liftoff, the rocket precisely deployed the satellite into a sun-synchronous orbit.

“GSLV-F16 has successfully injected the 2,392 kg NISAR satellite into its designated orbit,” confirmed V. Narayanan, a senior ISRO official, following the launch.

A Landmark Collaboration

NISAR marks the first satellite mission jointly developed by the Indian Space Research Organisation (ISRO) and the U.S. National Aeronautics and Space Administration (NASA). The satellite has an expected mission life of five years.

Speaking on the occasion, Casey Swails, NASA’s Deputy Associate Administrator, said that NISAR will equip decision-makers with critical data to manage infrastructure, improve disaster response to events like earthquakes, floods, and landslides, and help enhance agricultural productivity by mapping farmlands.

24/7 Earth Monitoring

NISAR is designed to scan the Earth continuously, providing reliable, all-weather data both day and night, every 12 days. The satellite is capable of detecting even subtle changes on the Earth’s surface, including ground deformation, ice sheet movement, and vegetation dynamics.

ISRO outlined several applications of NISAR, including sea ice classification, ship detection, shoreline monitoring, storm tracking, soil moisture assessment, surface water mapping, and support for disaster relief operations.

NASA has confirmed that mission controllers have successfully established full communication with the spacecraft.

Cutting-edge Radar Technology

NISAR is the first satellite to use a dual-frequency Synthetic Aperture Radar (SAR), operating with NASA’s L-band and ISRO’s S-band frequencies. It features a 12-metre unfurlable mesh reflector antenna developed by NASA, mounted on ISRO’s customized I3K satellite bus.

Using SweepSAR technology, NISAR will cover a wide observational swath of 242 km while maintaining high spatial resolution — a first of its kind in Earth observation missions.



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