Accuracy, budget, baseline length -- pick two. In your case, keep the baseline as short as possible, even if that requires setting up your own base station. Single-frequency receivers are fine if baseline length is kept under a couple of km.
Signal obstructions are hard to avoid, but you can minimize their impact by tracking GLONASS in addition to GPS. So that when a satellite drops, you'd still have a couple locked on. RTKLIB can process GLO -- check if the receiver can track too. Put the rover antenna on the roof of the vehicle (buy a cheap one with magnetic support). Those are the principles; I don't have any specific hardware in mind, though. -F. Message: 1 > Date: Tue, 1 Jul 2014 13:24:33 -0500 > From: Nick <[email protected]> > To: [email protected] > Subject: [FOSS-GPS] RTKLIB Vehicle Accuracy > Message-ID: > <CA+Qch=+ > [email protected]> > Content-Type: text/plain; charset="utf-8" > > Hello, > > I am interested in getting an RTK GPS setup working for a moving vehicle, > not fast, perhaps 10 mph. I would postprocess the data collected later, > using data downloaded from a nearby station. > > My desire is to log elevation data every few seconds as the vehicle drives. > I hope to achieve 10-20 cm accuracy for the position and the elevation. > > As I research RTKLIB, it seems like most information I come across is > regarding a static location. Is my goal feasible to achieve this kind of > accuracy as the vehicle moves? > > If so, can anyone recommend a good board to get me started? I'm hoping to > be able to do this for under $200 (just one receiver since the base station > is public) -- please give me a reality check if this is unlikely. Thanks, > > Nick >
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