India to have its own GPS by 2016

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India is just 3 satellites away from having its own GPS.

The 4th in the series of 7 navigational satellites, namely 'IRNSS 1D', has successfully been placed into the geosynchronous orbit aboard the PSLV-C27 from Sriharikota.

Its predecessors namely IRNSS-1A, 1B and 1C, are successfully operating in their space.

The entire IRNSS constellation of seven satellites is planned to be completed by 2016. 

This is the twenty eighth consecutively successful mission of the PSLV. 

Indian Regional Navigation Satellite System (IRNSS) :

  • Our GPS Will have a total of 7 satellites in space expected by 2015 (3 in geostationary orbit and 4 in inclined geosynchronous orbit).
  • Will have a range of 1500km (thus neighbouring countries like Nepal, Srilanka would also be able to use).
  • Positional accuracy of better than 20 metres in the "primary service area" (i.e 1500km)


  • Standard Positioning Service : Available for all users
  • Restricted Service : encrypted service (only for authorised users like Military and other government agencies)

Some Applications (where it will be useful once all 7 satellites are in space):

To provide accurate position information service to users (precise timing), disaster management, Navigation : (marine, aerial, terrestrial), aid to hikers, mountaineers, trekkers and other travellers vehicle tracking ; visual-voice navigation in driving; fleet management, mapping and geodetic data capture.

Other Navigational Satellite Systems:

  • Global Orbiting Navigation Satellite System (GLONASS) : Russia
  • Global Positioning System (GPS) : United States
  • Galileo (GNSS) : European Union 
  • BeiDou satellite navigation system (COMPASS) : China
  • Quasi-Zenith Satellite System : Japan
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