ISRO Missions and Discoveries

Geo-imaging satellite EOS-03


From UPSC perspective, the following things are important :

Prelims level: EOS-03, SSLV

Mains level: Not Much

Geo-imaging satellite for earth observation EOS-03, which would enable near real-time monitoring of natural disasters like floods and cyclones, is scheduled for launch in the third quarter of 2021.


  • ISRO has realized a geo-imaging satellite, “EOS-03”, for Earth Observation from Geostationary Orbit.
  • EOS-03 is capable of imaging the whole country four-five times daily and would enable near real-time monitoring of natural disasters like floods and cyclones.
  • In addition to natural disasters, EOS-03 would also enable monitoring of water bodies, crops, vegetation condition, forest cover changes.

Other developments: Small Satellite Launch Vehicle (SSLV)

  • The first developmental flight of the Small Satellite Launch Vehicle (SSLV) is scheduled for the fourth quarter of 2021 from the Satish Dhawan Space Centre, Sriharikota.
  • The SSLV is a cost-effective, three-stage and all-solid launch vehicle with a payload capability of 500 kg to 500 km planar orbit or 300 kg to Sun-Synchronous Polar Orbit.
  • It is ideal for the on-demand, quick turn-around launch of small satellites.
  • The major technologies developed as part of SSLV are flexible nozzle control with electro-mechanical actuators for all stages, miniaturized avionics, and a velocity trimming module in the upper stage for precise satellite injection.

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