[FOSS-GPS] RTKLIB Vehicle Accuracy

[Nick Østergaard]

Hi Anton

Really? You get by with that small patch antenna? Is that a good (green in
rtkplot) RTK solution you get from that constant?

Regards
Another Nick
Den 01/07/2014 21.11 skrev "Anton Strydom" <agstrydom at gmail.com>:

> 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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