ISRO to Launch Standby Navigation Satellite to Replace IRNSS-1A

India will launch one of its back up navigation satellites this year as a replacement to IRNSS-1A satellite, whose three atomic clocks have failed, an official of the Indian space agency said on Monday. The official denied the existence of similar problems with the rubidium atomic clocks in another navigation satellite. "The atomic clocks have failed in only one satellite. We will be launching the stand-by satellite this year. More

(Source: NDTV - Feb 1)