The Indian Space Research Organization (ISRA) in cooperation with NASA has successfully launched the satellite Nisar (NASA-ISRO Synthetic Aperture Aperture Radar), a top mission to observe the country, from Sriharikota.
In particular, the lifting was held on July 30, 2025 at 17:40 by the Satish Dhawan Space Center in Sriharikota, Andhra Pradesh.
This orientation mission, for more than ten years, is a combined investment of more than $ 1.5 billion with Indian and American space agencies.
Nisar was deployed into the orbit on board GSLV-F16 (geosynchronous satellite starting vehicle). While such missions are usually carried out using PSLV, the first opportunity where the GSLV missile placed the satellite in the synchronous polar orbit of the Sun.
It is remarkable that Nisar is the first radar imaging satellite globally to work with double radar frequencies, L-Pásma NASA and ISRO S-PASMA, which, according to two space agencies, allows you to detect fine shifts on the Earth’s surface, except for changes like a centimeter.
“Liftoff! And we have Liftoff! GSLV-F16 successfully launched the transport of Nisar,” ISRO announced on X.
Weighing 2,392 kilograms was successfully inserted into the solar synchronous orbit. They circle the ground every 97 minutes and capture detailed images of land, ice and select the surfaces of the ocean every 12 days.
The Nisar, designed with the life of the mission after five years, is equipped to provide vital data on changes in the Earth’s surface with exceptional accuracy.
Previously on the day, ISRO published X: “The start day arrived at GSLV-F16 and Nisar. GSLV-F16 stands on the mat. Nisar is ready.
The Minister of the Union Jitendra Singh welcomed the opening and called it more than a satellite, is an Indian “scientific handshake with the world”.
The most significant feature of Nisar is its dual synthetic radar Aperture, which uses innovative Sweepsar technology. This allows the satellite to produce high -resolution images through wide geographical lines.
ISRO noted that the satellite maps global ground masses, ice-covered terrain, sea ice, islands and selected ocean areas every 12 days using L-pound radars (from NASA) and S-Band (developed ISRA).
Also read | NASA-Isro’s Nisar, which will start on Wednesday, begins countdown for GSLV-F16 mission
The primary objectives of the mission include monitoring soil and ice deformation, analysis of ecosystems and observing oceanic phenomena of mutual interest of scientists in India and the United States.
The initial 90 days after the launch will be dedicated to the cash register (IOC) phase for orbit, during which the satellite systems will be tested and calibrated before complete scientific operations.
A remarkable aspect of the mission is its open data policy, all Nisar observations will be freely available to the global scientific community within one to two days, and access to almost real time is provided during emergency situations.
This mission also refers to a milestone in microwave and offers fully polarimetric and interferometric capabilities using two separate radar frequencies, an unprecedented feature in the Earth’s observation satellites.
(Tagstotranslate) ISRO
