[time-nuts] GPSDO control loops and correcting quantizationerror
Poul-Henning Kamp
phk at phk.freebsd.dk
Sun Sep 16 20:30:08 UTC 2012
In message <34D5C3CE-6B3D-4944-996A-7637373B2857 at gmail.com>, Dennis Ferguson wr
ites:
>I'm not sure there could be a difference between the goals of
>frequency accuracy and time accuracy that would effect that time
>constant.
It does.
A PLL more or less corresponds to an "PI" regulation, where a FLL
only needs to have the "I" term.
Because you don't have the interaction between the P and I terms,
the I-timeconstant can be longer.
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG | TCP/IP since RFC 956
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Never attribute to malice what can adequately be explained by incompetence.
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