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ISRO successfully launched radar imaging satellite RISAT-2B on-board PSLV-C46 from Sriharikota.

  • RISAT-2B was placed into an orbit of 555 km with an inclination of 37 degree to the equator.
  • This is the fourth flight unit of the RISAT programme and it would be used for reconnaissance, strategic surveillance and disaster management.


  • The satellite has a mass of 615 kg and feature an X-band SAR (Synthetic Aperture Radar).
  • It is built for a 5 year operational lifetime.
  • RISAT 2B will be launched into a 37° inclined orbit at 555 km orbital height.
  • RISAT 2B, RISAT 2BR1 and RISAT 2BR2 will be launched in 2019 on Indian PSLV launch vehicles.
Key features All-season satellite RISAT-2B is a radar imaging earth observation satellite devloped by ISRO Altitude | 557 km Payload I X-&nd radü Inclination | 37 Mission Lifel 5 Frs Applications Disaster Forestry Agriculture management su'Vt RISAT-2B Third stage (HPS3) PSI,V- C46 Height: 44.4 m stage (PSI) I— Fourth stage (ps4) Second UPSC Legacy IAS Academy


  • In India radar imaging are used for crop estimation because our main crop growing season of kharif is in May-September when it rains and gets cloudy.
  • We have used this data extensively for forestry, soil, land use, geology and during floods and cyclone.
  • Due to an all-weather seeing feature, the satellite becomes special for security forces and disaster relief agencies.
June 2024