[FOSS-GPS] RTKLIB Vehicle Accuracy

[Anton Strydom]

Hi Nick

I have done a lot of testing with U-Blox LEA 6T at speeds of up to 120 km /
h. Lat & Lon does not appear to be a problem but elevation is a problem. I
paid the equivalent of $60 for the 2 receivers and ceramic patch antennas.

They are accurate on base line up to 10km where after accuracy drastically
degrades.

I do all my testing in real time and do not post process.

If you want to I can speak to my supplier and see if they still have some
of the LEA 6T's in stock at the price I paid for them.

Attached are photographs of the units I am using

Regards

Anton


On Tue, Jul 1, 2014 at 8:50 PM, Danny Miller <dannym at austin.rr.com> wrote:

>  It does work in moving.  But signal problems do still make the position
> jump around, trees and buildings and an antenna's orientation changing can
> make an error happen.  Antenna quality has a lot to do with that, too.
>
> RTKLib requires a GPS with RAW pseudorange outputs.  The NV08C is a good,
> cheap one to do it:
>
> http://www.nvs-gnss.com/contacts.html
>
> Contact your local sales rep there- it was actually easy in my experience
> to order a couple from them, and oddly cheaper than Newark element 14, as
> well as quicker to ship.
>
> Danny
>
>
> On 7/1/2014 1:24 PM, Nick wrote:
>
> 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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