Why is Indian Regional Navigational Satellite System (IRNSS) needed? How does it help in navigation?

Structure of Answer:

  • Introduction
  • Define IRNSS and its basic structure
  • Mention its uses :
  • Civilian positioning (Military, secure positioning)
  • Decrease in dependence on USA’s GPS
  • Helps in Diplomacy with neghboring countries
  • Way forward( Showcases India’s achievements in Space missions, more projects for ISRO)
  • Conclusion

Key points:

  • IRNSS: Indian Regional Navigation Satellite System (IRNSS) project envisages establishment of a regional navigational satellite system using a combination of GEO and GSO spacecrafts and state-of-the-art ground systems.
  • The IRNSS System provides navigation solution all time with position accuracy better than 20m during all weather conditions, anywhere within India and a region extending about 1500 km around India.
  • IRNSS provides Standard Positioning Service (SPS) and Restricted Service (RS) to the users on dual frequencies in L5 and S band.
  • IRNSS Architecture : IRNSS is planned to have 7 satellites complemented with the appropriate ground infrastructure as a minimum.
  • As it is traditional in GNSS systems, the architecture is described next in three different segments: the space segment, the ground segment and the user segment.

There will be two kinds of services:

  • Special Positioning Service (SPS)
  • Precision Service (PS)
  • The Performances expected for the IRNSS system are: Position accuracy around 20 m over the Indian Ocean Region (1500 km around India) and less than 10 m accuracy over India and GSO adjacent countries.
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