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Mahesh

05/08/22 05:02 AM IST

NAVIC System

In News 
  • Government says, India’s satellite-based navigation system, NavIC, is as good as GPS of the United States in terms of position accuracy and availability in its service region.
NAVIC 
  • Navigation in Indian Constellation (NavIC) is an Indian Regional Navigation Satellite System (IRNSS), developed by the Indian Space Research Organization (ISRO).
  • IRNSS consists of eight satellites, three satellites in geostationary orbit and five satellites in geosynchronous orbit.
  • The main objective is to provide reliable position, navigation and timing services over India and its neighbourhood.
  • It works just like the established and popular U.S. Global Positioning System (GPS) but within a 1,500-km radius over the sub-continent.
  • It has been certified by the 3rd Generation Partnership Project (3GPP), a global body for coordinating mobile telephony standards.
Benefits
  • NavIC can help in navigation on land, air, sea and also in disaster management.
  • NavIC satellites are placed at a higher orbit than the GPS of United States. NavIC satellites are placed in geostationary orbit (GEO) & geosynchronous orbit (GSO) with an altitude of about 36,000 km; GPS satellites are placed in medium earth orbit (MEO) with an altitude of about 20,000 km.
  • NavIC uses dual frequency bands, which improves accuracy of dual frequency receivers by enabling them to correct atmospheric errors through simultaneous use of two frequencies.
  • It also helps in better reliability and availability because the signal from either frequency can serve the positioning requirement equally well.
  • The coverage area was designed to cover Indian Territory and surrounding 1500 km of Indian borders.
Source- PIB 

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