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GLONASS had an 11 hour outage


Article by: Darren Griffin
Date: 3 Apr 2014

pocketgpsworld.com
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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Comments
Posted by PaulB2005 on Thu Apr 03, 2014 8:34 am Reply with quote

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


 
Posted by MaFt on Thu Apr 03, 2014 8:58 am Reply with quote

Pavlov knows his stuff Wink


 
Posted by DennisN on Thu Apr 03, 2014 9:02 am Reply with quote

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


Dennis

If it tastes good - it's fattening.

Two of them are obesiting!!

 
Posted by slugg on Fri Apr 04, 2014 7:53 am Reply with quote

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


 
Posted by GerryC on Fri Apr 04, 2014 3:40 pm Reply with quote

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


Gerry
TomTom730T
Cameralert for Android
Brodit ProClip mount

 
Posted by MaFt on Fri Apr 04, 2014 4:44 pm Reply with quote

GerryC Wrote:
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


I wondered that too.


 
Posted by marc_holmes on Wed Apr 09, 2014 7:38 pm Reply with quote

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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