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SAGAR SAMPARK

  • Category
    Ecology and Environment
  • Published
    21st Jul, 2023

Context

Recently, the Union Minister of Ports, Shipping and Waterways inaugurated the indigenous Differential Global Navigation Satellite System (DGNSS) ‘SAGAR SAMPARK’.

What is Sagar Sampark?

  • It is an indigenous Differential Global Navigation Satellite System (DGNSS).
  • The Differential Global Navigation Satellite System is a terrestrial based enhancement system which corrects the errors and inaccuracies in the Global Navigation Satellite System (GNSS) allowing for more accurate positioning information.
  • It is now able to transmit corrections of GPS and GLONASS.
  • The error correction accuracy has been improved from 5 to 10 meters to less than 5 meters for 100 Nautical Miles (NM) from Indian coastlines.

Significance:

  • Sagar Sampark at six locations will assist the Director General of Lighthouses and Lightships (DGLL) to provide radio aids to ships for marine navigation.
  • The system will provide accurate information to the ships for safe navigation and will reduce the risk of collisions, groundings, and accidents in the port and harbour areas.
  • This will lead to the safe and efficient movement of vessels.
  • It will significantly improve the accuracy of GPS positioning and reduces errors caused by atmospheric inferences, satellite clock drift, and other factors.

Global Navigation Satellite System (GNSS)

  • A Global Navigation Satellite System (GNSS) consists of a constellation of satellites orbiting the Earth in very specific trajectories.
  • GNSS is often generically referred to as GPS (Global Positioning System) but that acronym actually refers specifically to the United States constellation. There are several GNSS constellations provided by governments around the world, including:
    • BeiDou – China
    • Galileo – European Union
    • GLONASS – Russia
    • GPS - United States
    • IRNSS – India (also known as NavIC)
    • QZSS – Japan

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