GPS time synch
christian.t.80 at gmail.com
Wed Feb 21 01:57:06 CET 2007
Richi Plana wrote:
> I'd like to know what the difference is between the two accuracy-wise,
NTP can be as accurate as ± 50ms on a (not saturated) internet-line.
± 150ms should always be possible.
GPS is - in theory - much more precise, but only if you have a
GPS-Receiver which is designed for being used at time-servers etc.
And it depends mostly on the protocol you are talking to the GPS. If you
have a serial- or USB-connection and are using the NMEA-protocol you
will get the time rounded to a full second and the datagram arrives
somewhen in this second so you would have something like ± 1s accuracy.
More information about the openmoko-devel