GLONASS had an 11 hour outage

Darren · Posted: Thu Apr 03, 2014 8:27 am Post subject: GLONASS had an 11 hour outage

A major outage of GLONASS occurred earlier this week with every satellite in the constellation broadcasting corrupted ephemeris data. The result was the entire network was unusable for 11 hours from just after midnight Tuesday (GMT+1).

Whilst there has been no official word from the Russian Aerospace Defence Forces who operate GLONASS, GPSWorld reports that the outage was a result of bad ephemeris data being uploaded to the satellites (see our GPS primer here).

Likely a result of human error, once the problem was noticed it could not be resolved until each satellite had passed over a control station where it could be reset and it was this process that caused the outage to last nearly 12 hours.

For multi-standard GPS receivers this outage would have had little impact but for anyone using a GLONASS only device the issue would have been much more severe.

The network is back on-line now (GLONASS status), but this demonstrates why multiple networks, operated by different countries may not be such a bad thing after all.

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Darren Griffin - Editor

PaulB2005 · Posted: Thu Apr 03, 2014 9:34 am Post subject:

Spooky after the newsletter on Tuesday morning..... Shocked

MaFt · Posted: Thu Apr 03, 2014 9:58 am Post subject:

Pavlov knows his stuff Wink

DennisN · Posted: Thu Apr 03, 2014 10:02 am Post subject:

Does this mean that for half a day, their tanks didn't know where they were in Ukraine? Or they would have bombed Washington near Newcastle instead of Washington near Disneyland? Shocked

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Dennis

If it tastes good - it's fattening.

Two of them are obesiting!!

slugg · Occasional Visitor Joined: Feb 28, 2006 Posts: 1

Clearly a deliberate situation made by 'someone' to prove a point!!

GerryC · Posted: Fri Apr 04, 2014 4:40 pm Post subject:

After reading today's newsletter, you have to wonder if the outage and the approval for a base station in Nicaragua are linked. The outage should have been shorter if they could update the satellites from 2 locations and not have to wait for them to orbit over Russia to be updated.

Gerry

MaFt · Posted: Fri Apr 04, 2014 5:44 pm Post subject:

marc_holmes · Lifetime Member Joined: Jan 02, 2007 Posts: 49

The General Lighthouse Authorities of the UK and Ireland have issued a map illustrating the effects of last week's failure in "Russia's GPS" system.

http://www.bbc.co.uk/news/science-environment-26957569

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