[time-nuts] Comparing GPS receivers
Poul-Henning Kamp
phk at phk.freebsd.dk
Mon Jan 10 01:21:29 EST 2005
In message <003601c4f6aa$b5a9e4e0$f212f204 at computer>, "Tom Van Baak" writes:
>The behavior of a GPS receiver is mostly revealed
>within a few hours; I don't think a longer integration
>time buys you much. I mean, if your GPS receiver
>1 PPS wanders by 50 ns over a few hours it will also
>show wandering by 50 ns over a day, or a month,
>or year.
I would say "a few days" since there can be a diurnal systematic
oscillation due to orbital mechanics and local multipathing.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained by incompetence.
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