[time-nuts] New timing receivers?

Tom Van Baak tvb at LeapSecond.com
Mon Apr 28 14:56:21 EDT 2014

> I don't see that behavior.  Looking at ~24 hours of data I have 1,024
> unique (x,y) coordinates (as reported by the GGA sentence).  The standard
> deviation of the error relative to the median (x,y) position is 1.2 meters.


I agree. I have 30 days of Adafruit data; the position is never quite static, bounces around over a couple of meters as one would expect for a receiver in 3D mode. Send me email off-list for details about lat/lon/alt RMS deviation and scatter plots.

On the other hand, I have a second "identical" Adafruit receiver with distinctly different deviation patterns. I'm working through that mystery now. Nothing with this hobby ever ends up being a simple quick test.


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