NASA-ISRO SYNTHETIC APERTURE RADAR (NISAR) SATELLITE
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Why in News?
NASA-ISRO Synthetic Aperture Radar (NISAR) Satellite launched from Satish Dhawan Space Centre, Srihari Kota on 30th July, 2025About NISAR Satellite:
Jointly developed by NASA and ISRO, the NASA-ISRO Synthetic Aperture Radar (NISAR) is the world’s first Earth observation satellite to carry dual-frequency synthetic aperture radars, L-band by NASA and S-band by ISRO, on a single platform.
- It will deliver high-resolution, all-weather, day-and-night imagery of Earth’s land and ice surfaces, revisiting each location every 12 days.
- Launched aboard through GSLV-F16 launch vehicle (this was the first time ISRO’s GSLV vehicle successfully placed a satellite into a Sun-synchronous Polar Orbit)
- This 18th flight of the GSLV and the 12th using the indigenous cryogenic stage.
- Weight: 2393 kg
- Built around ISRO’s I-3K spacecraft bus
- NASA provided the L-band radar, GPS receiver, high-rate telecom system, Solid-State Recorder, and the 12-meter deployable antenna
- ISRO contributed the S-band radar, the spacecraft bus, the GSLV-F16 launch vehicle, and associated systems and services.
- The mission, estimated to cost over $1.5 billion, is jointly funded by both agencies.
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