NISAR (NASA-ISRO Synthetic Aperture Radar)

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RocketGSLV Mk. II
ProviderIndian Space Research Organization
Launch siteSatish Dhawan Space Centre Second Launch Pad · Satish Dhawan Space Centre, India
Mission typeEarth Science
Published UTCWed, 30 Jul 2025 · 12:10:00 UTC
Launch windowInstant / published T-0
Target orbitSun-Synchronous Orbit
Last schedule update2025-08-26T11:08:50Z
Schedule precision: The T-0 is accurate to the minute. A precise-looking countdown is still a schedule target, not a guarantee of liftoff.

Mission details

The NASA-ISRO Synthetic Aperture Radar, or NISAR satellite, will use advanced radar imaging to map the elevation of Earth's land and ice masses 4 to 6 times a month at resolutions of 5 to 10 meters. It is designed to observe and measure some of the planet's most complex natural processes, including ecosystem disturbances, ice-sheet collapse, and natural hazards such as earthquakes, tsunamis, volcanoes and landslides. Under the terms of the agreement, NASA will provide the mission's L band synthetic aperture radar (SAR), a high-rate telecommunication subsystem for scientific data, GPS receivers, a solid-state recorder, and a payload data subsystem. ISRO will provide the satellite bus, an S band synthetic aperture radar, the launch vehicle, and associated launch services.

Current status: The launch vehicle successfully inserted its payload(s) into the target orbit(s).

StageStageSun-Synchronous Orbit

Mission-specific study diagram for GSLV Mk. II: staging and target orbit are shown as separate mission phases.

Launch time, window and countdown

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Rocket and launch site

GSLV Mk. II is listed for this mission with Indian Space Research Organization. The current launch record places the mission at Satish Dhawan Space Centre Second Launch Pad · Satish Dhawan Space Centre, India.

The second launch pad was built between 1999 and 2003. It became functional in 2005 and has since been used for various rockets. This launch pad supports missions by PSLV, GSLV, LVM3 rockets and is even envisioned for India's future crewed spaceflight.

Launch pads and ranges matter because azimuth restrictions, overflight safety, recovery zones and target inclination can constrain when and how a mission flies. Browse the Rocket Launch Sites page to compare other active locations represented in the upcoming schedule.

Launch-site coordinates13.7199°, 80.2304°

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Sources and schedule caveats

Launch schedule data and associated imagery on this page come from Launch Library 2 / The Space Devs and are cached server-side by SpaceTracker.live. Schedule records can change as providers update readiness, weather, range coordination or mission constraints.