Re: [Gpsbabel-misc] Position accuracy

[Giorgio M. <gi...@su...>]

2017-05-07 19:06 GMT+02:00 Craig Bergh <cb...@iw...>:
> Would a gps file of sbp or sbp type include positional data? Can the
> horizontal dilution is precision (HDOP) be determined? I document HDOP in my
> GPS project as a measure of accuracy. Is this a solution?

I don't even know what an sbp file is :). I'm not really a GPS-guru,
but I seem to understand that H/V/PDOP are not really a measure of
accuracy, but rather of how satellite positions affect it. It is
dimensionless, while I would need something that can be transformed
into a length, so that I can draw an ellipse of uncertainty.

$GPGST is supported by my GPS and reports the standard deviation of
the measurment in the three dimensions, so it seems to suit my needs
perfectly.

Thanks anyway,
G.