[time-nuts] GPS 1 PPS Averaging ?

Tom Van Baak tvb at leapsecond.com
Sun Mar 13 23:11:35 EST 2005

> Averaging improves the measurement proportionally to the square root of
the number of averages.  With 100 second averages 2.3E-13 could be seen in
24 hours, and with 10,000 second averaging 2.3E-14 could be seen in one day.

Ah but the square root rule is only true when the
samples are independent. 1 PPS samples from
a GPS receiver are not completely independent.


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