India’s regional navigation satellite system, NavIC, has been restored to its minimum operational configuration of four satellites after the Indian Space Research Organisation (ISRO) successfully launched its navigation satellite NVS-03 on Friday. The satellite was placed into its designated injection orbit by the Geosynchronous Satellite Launch Vehicle (GSLV).
The second-generation navigation satellite, NVS-03, is equipped with indigenous and procured atomic clocks and is designed to support a wide range of applications, including real-time tracking of trains, vehicles and ships.
ISRO Chairman V Narayanan said after the successful launch that the NavIC constellation is a strategic national asset and an important component of the government's 'One Nation, One Time' initiative.
India's own alternative to GPS: Why NVS-03 matters
NVS-03 will complement three other operational navigation satellites, including NVS-01, strengthening India's independent Position, Navigation and Timing (PNT) infrastructure. The development comes as the government has recently notified the Legal Metrology (Indian Standard Time) Rules, 2026.
NavIC, or Navigation with Indian Constellation, is India's indigenous alternative to GPS, providing navigation services across the country and up to 1,500 km beyond its borders.
The 50-metre-tall GSLV rocket carrying the 2,232-kg NVS-03 satellite lifted off at 11:51 pm from the second launch pad at the Satish Dhawan Space Centre on Friday, following a 24-hour countdown.
What is India's NavIC system?
After approximately 18 minutes of flight, all three stages of the launch vehicle, including its complex cryogenic upper stage, performed successfully. The satellite subsequently separated from the rocket and was injected into a Geosynchronous Transfer Orbit (GTO).
Addressing the team after the launch, Narayanan said three satellites, including NVS-01, were already operational and that the successful deployment of NVS-03 had restored NavIC's Position, Navigation and Timing services.
He highlighted the system's strategic importance, noting that it provides India with independent access to navigation and timing services while supporting civilian applications such as real-time tracking of trains, vehicles and shipping vessels.
The ISRO chief also confirmed that one of the indigenous atomic clocks had been successfully placed in orbit.
He further announced that the EOS-05 geo-imaging satellite, launched in September, was functioning properly and providing outstanding data.
Narayanan said all systems of the GSLV performed as expected, with the rocket precisely placing NVS-03 into its designated orbit. The mission also marked the shortest turnaround time between two successive GSLV missions, with just 56 days separating them.
Congratulating ISRO scientists, industry partners and academic institutions, he highlighted the contribution of domestic industries, stating that nearly 80 per cent of the mission budget had been channelled into Indian industries.
The satellite has been injected into an orbit with a planned perigee of 170 km and an apogee of 37,023 km. It will use its onboard propulsion system to reach its final geosynchronous orbital slot at 32.5 degrees East.
In a first-of-its-kind safety measure for the mission, ISRO launched the satellite with its pyrotechnic valves already open to ensure the reliability of the propulsion system.
Equipped with an indigenous Rubidium atomic clock, NVS-03 will transmit navigation signals in the L1, L5 and S bands, further strengthening India's regional navigation capabilities.
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