I'd have a third GPS as base station. Then pick one of the two rover GPS and process this first as kinematic w.r.t. the fixed base station. Next, process the second rover w.r.t. to the first rover, with RTKLIB's "moving base station" mode (it's _not_ w.r.t. to the third, fixed GPS station). Measure the constant baseline length between the two rovers and use that as a constraint (there's a field for that in RTKLIB). Make sure the uncertainty of it is realistic -- tape measurements won't be better than 1 cm, or 1 in if the antenna phase centers are not calibrated. Keep the two rovers as far apart as possible -- that will improve the heading solution.
> > ---------------------------------------------------------------------- > > Message: 1 > Date: Tue, 4 Nov 2014 11:40:45 -0800 (PST) > From: MarekM <[email protected]> > To: [email protected] > Subject: [FOSS-GPS] Short moving baseline implementation > Message-ID: <[email protected]> > Content-Type: text/plain; charset=us-ascii > > Hello All, > I wish to use RTK short (approx 2 meters) moving baseline to calculate > heading angle. > This is a part of aerial orthophotography camera stabilisation - yaw > compensation, > My plan is to use 2 pcs of uBlox LEA-6T modules and STM32F4 microprocessor. > The questions are: what is minimum set of algoritms/modules to calculate > angle between two moving antennas? Refrsh rate is 5 Hz - how about > necessary > memory and processing power? > > > > > > -- > View this message in context: > http://open-source-gps-related-discussion-and-support.1099874.n2.nabble.com/Short-moving-baseline-implementation-tp7573069.html > Sent from the Open Source GPS-related discussion and support mailing list > archive at Nabble.com. > > > ------------------------------ > > _______________________________________________ > FOSS-GPS mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/foss-gps > > End of FOSS-GPS Digest, Vol 70, Issue 3 > *************************************** >
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