IsRO, NAsA for 2021 NIsAR Mission (Download PDF)

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ISRO and NASA have launched NASA-ISRO Synthetic Aperture Radar (NISAR) mission to co-develop and launch a dual frequency synthetic aperture radar (SAR) satellite by 2021. Satellite to be most expensive earth-imaging satellite costing around $ 1.5 billion. Aims to study global environmental change and natural disasters.

Dual Frequency (L & S Band) Radar Imaging Satellite

Salient Features of NIsAR

  • NISAR a dual frequency (L & S Band) Radar Imaging Satellite.
  • First radar imaging satellite to use dual frequency.
  • NASA՚s Jet Propulsion Laboratory (JLP) responsible for design and development of L-band SAR, GPS system, 12m unfurlable antenna and data recorder.
  • ISRO responsible for design and development of S-band SAR, Spacecraft Bus, data transmission system, spacecraft integration & testing, launch using GSLV and on-orbit operations.
  • Expected to be launched in year 2021 with life of 3 years.
  • Satellite to be launched into a sun-synchronous dawn to dusk orbit.

Applications of NIsAR

  • Provide unprecedented snapshots of earth every week using advanced radar imaging.
  • Measure complex processes like ecosystem disturbances, natural hazards such as earthquakes, tsunamis, volcanoes, and landslides.
  • Natural resources mapping & monitoring
  • Estimating agricultural biomass over crop cycle
  • Monitor floods and oil slicks, coastal erosion, coastline changes and variation of winds in coastal waters Conduct surface deformation studies due to seismic activities
  • Mission establishes general pathway for future joint missions between ISRO and NASA for Mars exploration.
  • Strengthen the Indo-US ties.

What Does It Mean by Synthetic-Aperture Radar (SAR) ?

Synthetic-aperture radar (SAR) is a radar that can create two- or three-dimensional images of objects, such as landscapes. SAR uses the motion of the antenna to provide finer spatial resolution than conventional beam-scanning radars.

- Published/Last Modified on: September 5, 2017


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