The GPS system was designed to transfer time anywhere in the world (and for navigation, of course) and so your answer is yes. If the GPS receiver is a timing grade unit then you can expect under 100nS accuracy (to UTC) and stability over time of the PPS.
On Fri, Dec 28, 2012 at 8:49 PM, Dan Kemppainen <d...@irtelemetrics.com>wrote: > Hi all, > > I've been following this list with some interest, and have a question > about two individual timing GPS units PPS outputs. Let's assume that the > timing GPS units are identical units, say two SSR-6t's for example. > > If I take these two units and fire them up next to each other off of the > same antenna one would expect the PPS signals to be very similar to each > other. If the unit specifies 20nS, I would expect at most, say, 40nS Error > between the two PPS signals. (Maybe this is not correct, by all means > discussion is welcome). > > Now, lets say we fire these units up on different antennas at the same > location. For the purpose of this discussion let's assume the antennas are > identical or as identical as reasonably possible. (Same make, mode, cable > length, etc). Will they still be within the specified errors or each other? > > Now, lets say we move them some distance apart say 500meters (or yards if > you prefer). Do they still maintain the same relative error between them? > > The reason for this question is two fold. I have a personal project in > mind where I'd like to time stamp two events within several tens of > hundreds of nS if possible, over some distance without cabling. Also, as I > started thinking of this application, I realized my understanding of the > details of GPS timing is a little weak. I figured this would be a good > place to ask. > > Thanks, > Dan > > > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.