>If ntpd knows where you are a single satellite is all that's needed.
No, you also need the appropriate software in the GPS receiver.
That's what makes "timing" boxes rather than the typical inexpensive
navigation units.
Does anybody know of any timing units that speak NMEA?
--
These are my op
Dave Hart wrote:
> ntpd/refclock_nmea.c when using $GPGGA tests for 0 and declares the
> clock not in sync. When I read "estimated" or "dead reckoning" wonder
> if ntpd should consider the clock not of sync when it sees fix
> indicator 6. The gotcha that comes to mind is what if there are too
> f
Dave Hart wrote:
> $GPGGA fix indicator field 6 has at least the following possible
> vaues:
>
> 0 no fix
> 1 GPS fix
> 2 DGPS fix
>
> One reference [1] mentioned
>
> 3 GPS PPS fix
>
> and several reference
>
> 6 estimated or dead reckoning
>
> ntpd/refclock_nmea.c when using $GPGGA test
$GPGGA fix indicator field 6 has at least the following possible
vaues:
0 no fix
1 GPS fix
2 DGPS fix
One reference [1] mentioned
3 GPS PPS fix
and several reference
6 estimated or dead reckoning
ntpd/refclock_nmea.c when using $GPGGA tests for 0 and declares the
clock not in sync. When
