I'd bet you could determine a lot about the cause by looking at the spectra of the error. I'm guessing that if the cause is an inaccurate survey location then the wondering will be periodic because at one point in the satilite's orbit it will be "too close" and then the distance will be to far. It might be hard to see this with multiple sats in view but still I'd not expect white noise.
Another guess is that when yo do see white noise then you have things set up about as good as you can. I supose some one has looked at this. Is randomness in the timing error a good test? If so then I am more motivated to compares my GPSDO and Rb oscillators. On Mon, Apr 22, 2013 at 7:15 PM, Hal Murray <hmur...@megapathdsl.net> wrote: > > > I wonder, what kind of timing GPS gives 112ns wander? > > How good is your antenna? 112 ns is roughly 112 feet. That's not at all > surprising if your antenna is inside or under trees. > > You might watch the number of satellites and/or watch the position while it > does a survey. > > > -- > These are my opinions. I hate spam. > > > > _______________________________________________ > 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. > -- Chris Albertson Redondo Beach, California _______________________________________________ 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.