Yes, both have completed their surveys. During the survey process I was getting up to 150 uS of error between the PPS pulses.
Pete. -----Original Message----- From: time-nuts [mailto:[email protected]] On Behalf Of Bob Camp Sent: Saturday, September 13, 2014 4:33 PM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] Correcting jitter on the 1 PPS signal from a GPSreceiver. Hi Have they both completed a survey and does the survey make sense? Bob On Sep 13, 2014, at 10:41 AM, Peter Reilley <[email protected]> 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 -- [email protected] To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
