India's Own GPS is ready with Seventh Navigation Satellite Launch

India’s own navigational system, the set-up for which was completed on Thursday with the launch of the seventh and final satellite, will be called NAVIC (Navigation with Indian Constellation), Prime Minister Narendra Modi announced after the launch.

The seventh and final satellite of the Indian Regional Navigation Satellite System, the IRNSS 1G, was launched into a sub geosynchronous transfer orbit with a perigree (nearest point to earth) of 284 km and an apogee (farthest point to earth) of 20,657 km. The satellite was launched on board the Polar Satellite Launch Vehicle (PSLV), which took off from the Sriharikota launch pad at 12.50 p.m.

With this launch, the IRNSS constellation of seven satellites is now complete. This will allow the Indian Space Research Organisation (ISRO) to focus on the process of designing front end chips which will receive the navigational signals sent out by the satellites. The system will be similar to the Global Positioning System (GPS) operated by the United States with 24 satellites and the Glonass, Galileo and BeiDou systems of Russia, Europe and China respectively.

All satellites will undergo stabilisation testing and verification of their performance over the next few months before being pushed into use, according to ISRO officials.

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