Published on: February 14, 2022




The Indian Space Research Organisation (Isro) successfully launched its earth observation satellite EOS-4 and two co-passenger technology demonstrator and scientific satellites from the first launch pad at the country’s only spaceport in Sriharikota, Andhra Pradesh recently


Cartosat series of satellites

Fourth in a series of earth observation satellites

Launched on PSLV C5


  • Land and forest mapping and monitoring
  • Mapping of resources like water or minerals or fishes
  • Weather and climate observations
  • Soil assessment
  • Geospatial contour mapping
  • Complement the data from Resourcesat, Cartosat and RISAT-2B

NOTE – ISRO had moved to a new naming system for its earth observation satellites which till then had been named thematically, according to the purpose they were meant for



  • Student satellite
  • Developed by the Thiruvananthapuram-based Indian Institute of Space Science and Technology in collaboration with the University of Colorado in the United States where it was assembled and tested.
  • Students from Nanyang Technological University in Singapore and National Central University of Taiwan have also contributed.
  • Study the dynamics of the upper atmosphere and carries an X-ray spectrometer for studying solar flares.


  • Technology demonstrator for the first India-Bhutan joint satellite
  • Two countries had signed a space agreement last year, and its first outcome would be the launch of BhutanSat, or INS-2B, on a PSLV rocket in March.
  • Has a thermal imaging camera meant for earth observation purposes, like assessment of land and water surface temperature, and identification of forest and tree cover.