TAG: hydrogen maser

Galileo clock anomalies under investigation

January 19, 2017By
Rubidium atomic clock, or RAF.

The European Space Agency today issued a press release addressing the Galileo clock failures reported Wednesday. GPS World Innovation editor Richard Langley provided the following summary of the satellites and clocks involved, based on information we have received to date. 5 satellites affected: 3 IOVs, 2 FOCs Total of 10 failures; 1 fixed; so 9 continuing failures 5 masers on... read more

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Power Loss Created Trouble Aboard Galileo Satellite

July 8, 2014By and
GalileoStatus-O

In an update to our July 2 story (recapped below), correspondent Peter de Selding wrote in Space News on July 3 that the trouble aboard the fourth in-orbit (IOV) Galileo satellite arose from a sudden, unexpected loss of power. The power outage flashed on May 27, shutting down the satellite’s E1 signal. The signal “re-established itself almost immediately. But as... read more