GPS (Global Positioning system) is an US based technology which provides exact time & Geo-Location on anywhere in our planet. This system was created by US govt with the help of 31 satellites and it is also maintained by US govt.
Now, India’s own regional navigation satellite system named as “Navigation with Indian Constellation (NavIC)” is established by ISRO and is functional from April 2018 onwards. While others GPS have a position accuracy of 20-30 metres, the position accuracy of the NavIC is 5 metres, making it technically better than the all others GPS. It works through a constellation of 7 satellites launched by the Indian space research organisation (ISRO).
ISRO has completed all the necessary preparations with regard to establishment of Space Segment (currently Eight IRNSS satellites are in orbit) and Ground Segment (spread across India). The Seven satellites in the system are providing Positioning, Navigation and Timing (PNT) services and one satellite (IRNSS-1A) is providing messaging services.
The potential of this indigenous system is being demonstrated in various application sectors viz. vehicle tracking system, mobiles, timing & power synchronization, fisheries, surveying etc. For example, all commercial vehicles registered from 1st April 2019 onwards are mandated to have vehicle trackers, which are also NavIC-enabled. More than 30 companies are manufacturing Automotive Research Association of India (ARAI) or International Centre for Automotive Technology (ICAT) approved NavIC-enabled vehicle trackers in India. Through the provision of these services, the dependence on the American-owned GPS could be obviated.
The other countries which have their own indigenous system are Russia (GLONASS—Global Navigation Satellite System), European Union (Galileo Positioning System), Japan (Quasi-Zenith Satellite System—QZSS) and China (Beidou Navigation Satellite System—BDS).
Communication gadgets to fishing vessels
The Indian Space Research Organisation (ISRO) has provided 250 NavIC Messaging Receivers (NMR) to fishermen of Kerala respectively on a trial basis. This device provides Emergency Warning Alerts like cyclone, high waves and Tsunami and also provides information on Potential Fishing Zone and International boundary crossing based on the position information from NavIC.
ISRO have taken up the responsibility of providing NavIC devices on trial basis. Around 200 devices for Tamil Nadu and 250 devices for Kerala are distributed. A few numbers, viz. 8 and 10 respectively are provided to fishermen of Andhra Pradesh and Karnataka States for trial exercises.