In message <[email protected]>, Bob Camp writes:
I should add here, that you _can_ do a little bit better than the sawtooth correction. We know, or at least assume, that the GPS's internal clock is step-less and slowly changing, so if you put a predictive filter on this stuff, it can actually do a reasonable job at estimating which way the rounding of the sawtooth correction went (since it is integral ns). This reduces the random rounding error on the sawtooth correction from +/- 0.5 ns to something like +/- 0.3 ns. Totally not worth it, but a cool and educational project :-) -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 [email protected] | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
