Hi > On Dec 15, 2014, at 9:39 PM, Paul <tic-...@bodosom.net> wrote: > > On Mon, Dec 15, 2014 at 8:35 PM, Bob Camp <kb...@n1k.org> wrote: > >> So the question - If they are not going to be equal, which one do you pick? > > > The better one. If the math is sound the presumably the better position > results in better time. > If there are correlated defects then I suppose the GPS provided solution > may be better. > > None of the various surveys for my primary antenna (which is not optimally > located) agree and all are "wrong" compared to carrier phase solutions. > The delta between the various units (Trimble, uBlox and whatever is in the > Fury) is greater than the delta between my indoor and outdoor antenna > positions in xy. Z not so much.
I have seen cases where almost all the error is in Z and the X and Y agree quite well. My *guess* has been that most users don’t fly. The Z error is less of a problem for them. Numbers in the 10’ range are not at all uncommon. That’s enough to potentially add a 10 ns ripple to your data. Bob > _______________________________________________ > 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.
