[time-nuts] Interesting Phase Bump...
John Ackermann N8UR
jra at febo.com
Thu Nov 25 00:20:03 UTC 2004
Tom Van Baak wrote:
>Seriously, there may actually be something to this
>plot, but you can't be sure until you have a lot of
>data to separate normal from anomaly. What does
>the conv phase->freq plot look like?
>
>/tvb
>
>
Here's the frequency plot (converted from phase). I have one bad data
reading (occurring about in the middle of the phase change period) that
resulted in two big (10e-9) outliers. I removed those. There are still
8 other outliers (at 5 sigma) that I left in this plot. They're all in
the 10e-11 range.
Note the tau is 300 seconds (Stable32 for some reason interprets the MJD
timetags as slightly less than that), and this is raw GPS 1pps data
(averaged over that time) from a UT+, not M12, receiver.
John
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