[FOSS-GPS] help with RTKPOST of GPS file please
DavidKelley at iTSware.net
Sun Apr 17 20:13:09 PDT 2016
On 4/17/2016 3:07 PM, Michele Bavaro wrote:
2. the C/N0s peak at 40dBHz which is symptom of a very poor antenna.
[Michele, Can you recheck the dropbox URL you posted]
arwooldridge at googlemail.com wrote:
Just a thought re improving the fix: - If the airframe is pitching and
rolling you may want to experiment with a slightly higher elevation mask.
These two very good comments lead me to ask what the rover antenna is
and any data you can provide about the ground plane. [and if there is
any antex data for it]
To be blunt, if your antenna is a small patch type, it may be that you
are seeing the phase center vary by several decimeters with the changes
in yaw and elevation angles between the rover and the SVs as your
platform moves about. This can be calibrated out, but that is a rather
advanced topic. Looking at trends in the per-SV residuals when at the
same heading angle from pass to pass is perhaps the best way to get a
look into this. That would go a long way to explain the lack of an AR fix.
But it sounds like the community is giving you fast and darn good
feedback/help on your data set.
Regards, David Kelley
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