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NASA and ISRO collaborate on satellite NISAR

  • IASbaba
  • March 30, 2021
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NASA and ISRO collaborate on satellite NISAR

Part of: GS Prelims and GS-II – International Relations & GS-III – Space

In news

  • NASA and ISRO are collaborating on developing a satellite called NISAR. 
  • It will detect movements of Earth’s surface as small as 0.4 inches over areas about half the size of a tennis court.

Key takeaways 

  • It is an SUV-sized satellite. 
  • The name NISAR is short for NASA-ISRO-SAR. 
  • SAR here refers to the synthetic aperture radar that NASA will use to measure changes in the surface of the Earth.
  • Also, SAR refers to a technique for producing high-resolution images.
  • Because of the precision, the radar can penetrate clouds and darkness, which means that it can collect data day and night in any weather.
  • NASA will provide one of the radars for the satellite, a high-rate communication subsystem for science data, GPS receivers and a payload data subsystem.

Do you know?

  • ISRO will provide the spacecraft bus, the second type of radar (called the S-band radar), the launch vehicle and associated launch services.
  • The satellite will be launched in 2022 from the Satish Dhawan Space Center in Sriharikota, India, into a near-polar orbit.
  • It will scan the globe every 12 days over the course of its three-year mission of imaging the Earth’s land, ice sheets and sea ice to give an “unprecedented” view of the planet.

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