India’s indigenous GPS alternative, NavIC, has suffered setback with the loss of satellite IRNSS-1F after its final atomic clock stopped functioning on Friday.
With this development, only three satellites, IRNSS-1B, IRNSS-1L and NVS-01, remain operational for providing positioning, navigation and timing (PNT) services. This poses a challenge as a minimum of four satellites is reportedly required to ensure complete navigation coverage across India and surrounding areas.
“IRNSS-1F satellite launched in March 2016 has completed its design mission life…

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