[time-nuts] Of possible interest
Magnus Danielson
magnus at rubidium.dyndns.org
Tue Dec 11 07:04:41 UTC 2012
On 12/10/2012 02:53 PM, Jim Lux wrote:
> On 12/9/12 10:14 PM, DaveH wrote:
>> http://www.scmagazine.com.au/News/325731,researchers-find-crippling-flaws-in
>>
>> -global-gps.aspx
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>
> the actual paper is at:
>
> http://users.ece.cmu.edu/~dbrumley/courses/18487-f12/readings/Nov28_GPS.pdf
We had one incident here in Sweden when a complete network went down due
to a GPS bug. As PRN32 became enabled, it got selected and tracking data
was collected in a sat[32] vector, which is obviously unsafe so it
overwrote critical data and crashed. In fact, they all did this within a
minute or so as it came up above the horizon. It took a bit of advanced
guesswork from my side to find that flaw. It was one of those "blame the
solar flare" incidents, but we had data from the solar flare
measurements that showed a small deviation, the day after.
So yes, you can attack this way.
Cheers,
Magnus
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