u-blox Stationary Mode

Richard Laager rlaager at wiktel.com
Sun Nov 12 12:00:17 UTC 2017

There was some discussion on the gpsd-users list a few years ago about
setting the ublox into "stationary mode":


I'm not 100% sure, but I think I finally have that working, by running
the following before starting gpsd (ignore line wrapping in this email):
gpsctl -t 'u-blox' -b -x

Oddly, despite setting the proper type with -t, gpsctl still attempts
some type probing (which can be seen with -D 5).

With it set, the Speed value in cgps seems to be lower (typically 0.2
mph or less). Without it, it tends to be a bit higher.

I'm guessing this won't actually do anything useful for ntpd accuracy,
but I thought I'd mention it in case anyone wants to do more testing.


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