[time-nuts] GPSDO control loops and correcting quantizationerror
Poul-Henning Kamp
phk at phk.freebsd.dk
Sun Sep 16 06:24:16 UTC 2012
In message <5C1BBD844F6145969FE8A4785FEE490A at pc52>, "Tom Van Baak" writes:
>Has anyone on the list done work optimizing the timing accuracy rather than
>the frequency stability?
Yes, timing accuracy has been my main focus and in general I have been
using integration times on the low side of 10000 seconds for that,
but it depends a lot on the OCXO/Rb and environment.
The PLL in NTPns is a (by now) old attempt to make a self-tuning PLL
for optimal time stability, and it does a surprisingly good job at it.
--
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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