Hi Where are you getting the “15 ns accuracy” number from? When I look at the Trimble spec’s they have a number of errors described (like sawtooth) that are larger than 15 ns.
Bob On Sep 13, 2014, at 10:41 AM, Peter Reilley <pe...@reilley.com> wrote: > I have 2 Trimble Resolution T receivers and I have compared the 1 PPS signal > between the 2 units. They are spec'ed at 15 nS accuracy. I am seeing > about > 80 nS of jitter between the two. This is with about 6 satellites in view. > > I was thinking about ways to improve this. Since this is a stationary > installation, > can you use the jitter in the reported location (latitude and longitude) to > correct > for the 1 PPS jitter? > > The location data is derived using the internal GPS disciplined oscillator > so both > pieces of information should show the same jitter error. If you compare > the reported > location with the known fixed location you should be able to use that error > to correct > for the 1 PPS error. > > Does this make sense or am I missing something? > > Pete. > > > _______________________________________________ > 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.
