India Joins An Elite Club, One of 5 Countries To Use Rubidium Atomic Clock In Their GPS Satellite

India’s ISRO joins an elite club of space agencies which use a very complex and technical device, a Rubidium atomic clock in their GPS satellites. Only 4 other national space agencies use this atomic clock – USA’s NASA, EU’s ESA, China’s CNSA and Russia’s ROSCOSMOSIndia made a significant jump towards self-dependency after the successful launch and deployment of its NVS-1 NavIC satellite. While