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GPS Ground Software Bug Loses 13 Microseconds
Accepted submission by xpda https://xpda.com/junkmail/
at 2016-01-28 23:02:14
On January 25, an old GPS satellite launched in 1990 failed [uscg.gov] and was decommissioned. It was the oldest GPS satellite in use. This triggered a bug in the GPS ground system software [itnews.com.au] at January 26 12.49 am Mountain Time, and caused the GPS time to be off by 13 microseconds in the legacy L1 band. It was fixed at 6:10 am Mountain Time. While core navigation systems were apparently not affected, 13 microseconds is equal to about 4 kilometers in the GPS world. The Air Force reported that no weapons systems were affected.
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