And I have seen that the NavSync GPSes even if in position hold mode output a variable position anyway.
On Sun, Dec 18, 2011 at 11:50 PM, k4...@aol.com <k4...@aol.com> wrote: > Some GPS receivers automatically go into "position hold" mode if less than > 1 mph is detected for several seconds. However, they usually have a > command to disable that feature if you search the manual for the command. > > Connected by DROID on Verizon Wireless > > > -----Original message----- > From: Tom Van Baak <t...@leapsecond.com> > To: Discussion of precise time and frequency measurement < > time-nuts@febo.com> > Sent: Sun, Dec 18, 2011 22:35:42 GMT+00:00 > Subject: Re: [time-nuts] Distance between GPS Antennae > > From: "Brent Gordon" <time-n...@adobe-labs.com> > >> The best answer is try it it and see what happens. In my case two >> systems with patch antennas ten inches apart interfere significantly. >> Here are plots (using VisualGPS) of my position over a day or two. >> This is using a GPS from Sure Electronics. Note that the standard >> deviation is 0 for over 100,000 samples. As a side note, it must have >> some kind of heavy filtering going on to not show any position >> variation. This kind of result is repeatable with this unit. >> > > Brent, > > That's really interesting. It looks like one receiver is in GPS > hold mode (so you would expect the position to remain fixed) > and the other is in a normal 2D or 3D mode. Can you look at > the NMEA logs and tell which is which? Is this the same GPS > receiver I played with (leapsecond.com/pages/MG1613S)? > > Thanks, > /tvb > > > _______________________________________________ > 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. > _______________________________________________ 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.