[time-nuts] Setting Rubidium to match GPS source
SAIDJACK at aol.com
SAIDJACK at aol.com
Sat Sep 29 01:17:32 UTC 2007
In a message dated 9/28/2007 17:28:22 Pacific Daylight Time,
bruce.griffiths at xtra.co.nz writes:
>symmetric about the actual propagation delay, so in this case quoting
>the propagation delay error range perhaps imparts a pessimistic
>impression of the magnitude of this error.
Hi Bruce,
exactly.
the point of the original email was to show that this error alone can easily
reach and probably sometimes even exceed 12ns on even a very good GPS
receiver.
The point was not to give an exact - to the picosecond - account of what
errors to expect.
Better to take the entire email in context, rather than focus on a single
number itself.
Also, as mentioned in the email this is only one of many error sources in
GPSDO's..
bye,
Said
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