What is the purpose of the indigenous Differential Global Navigation Satellite System (DGNS

Ministry of Ports, Shipping and Waterways inaugurated indigenous Differential Global Navigation Satellite System (DGNSS) 'SAGAR SAMPARK'. DGNSS corrects errors in Global Navigation Satellite System (GNSS) for more accurate positioning. SAGAR SAMPARK deployed at 06 locations under DGLL (Directorate General of Lighthouses and Lightships). DGNSS enhances safety of navigation, reduces risks of collisions, groundings, and accidents in port and harbor areas. DGNSS fulfills international obligations of International Maritime Organisation (IMO), Safety of Life at Sea (SOLAS), and International Association of Marine Aids to Navigation and Lighthouse Authorities (IALA). DGNSS improves positioning within 5 meters, increases availability and redundancy, and uses GPS and GLONASS satellite constellations. Modern technology receivers and software improve accuracy and reduce errors caused by atmospheric inferences and satellite clock drift. Error correction accuracy improved to less than 5 meters for 100 Nautical Miles from Indian coastlines.