IRNSS-1G

IRNSS-1G was the seventh and final satellite in the first constellation of the Indian Regional Navigation Satellite System (IRNSS), now known as NavIC (Navigation with Indian Constellation). Launched on April 28, 2016, by the Indian Space Research Organisation (ISRO) from the Satish Dhawan Space Centre in Sriharikota, India, it completed the original seven-satellite constellation intended to provide accurate and reliable navigation services over India and a region extending 1,500 km around it.

IRNSS-1G, like its predecessors in the IRNSS series, was designed to provide standard positioning service (SPS) for civilian users and restricted service (RS) for authorized users. It operated in geosynchronous orbit and contributed to the redundancy and increased accuracy of the NavIC system. The satellite carried navigation payloads operating in the L5 and S bands, along with a C-band transponder for precise ranging. Its operational lifespan was projected to be at least ten years. With the deployment of IRNSS-1G, the IRNSS constellation achieved full operational capability, enabling independent regional navigation services.