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Q20 (UPPCS/2023) Science & Technology › Space & Defence Technology

The "NISAR satellite" is jointly developed by which of the following organizations?

Result
Your answer: —  Â·  Correct: A

Explanation

NISAR (NASA-ISRO Synthetic Aperture Radar) is a joint Earth-observation mission between the National Aeronautics and Space Administration (NASA) and the Indian Space Research Organisation (ISRO). It is designed to observe and measure some of the planet's most complex processes, including ecosystem disturbances, ice-sheet collapse, and natural hazards such as earthquakes and volcanoes.

  • NASA is providing the L-band SAR, a high-rate communication subsystem, GPS receivers, and a payload data subsystem.
  • ISRO is providing the S-band SAR, the spacecraft bus, the launch vehicle (GSLV Mark II), and associated launch services.
  • It is the first satellite mission to use two different radar frequencies (L-band and S-band) to map the entire globe in 12 days, providing spatially and temporally consistent data for understanding changes in Earth's ecosystems and surfaces.
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