[time-nuts] GPS tick all over the place. Suspect aurora effects

Tom Van Baak tvb at LeapSecond.com
Thu Jan 26 20:24:32 EST 2012


> google for "Space Weather Effects on GPS"
> 
> there's a presentaton by Thomas Bogdan at the Space Weather Prediction 
> Center that gives you some numbers to work with.
> 
> 10s of meters effects aren't unusual.

There's a wonderful example of GPS timing and space weather in a
paper by fellow time-nuts Rick Hambly and Tom Clark.

Rick was calibrating a set of Motorola Oncore receivers at USNO and
happened to capture the massively disrupting effect of a rare Aurora
on September 7, 2002.

There's a mention of this in his paper:
http://www.gpstime.com/files/PTTI/PTTI_2002_CNS_Testbed.pdf

But the best part are the sky photos and plots on page 17 and 18 here:
http://www.gpstime.com/files/PTTI/PTTI_2002_CNS_Testbed_VG.ppt

/tvb






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