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" <[email protected]>: > 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 <[email protected]> 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 >> >> >> >> _______________________________________________ >> This message is sent to you from [email protected] mailing list. >> Visit http://lists.osgeo.org/mailman/listinfo/foss-gps to manage your >> subscription >> For more information, check http://wiki.osgeo.org/wiki/FOSS-GPS >> >> >> >> _______________________________________________ >> This message is sent to you from [email protected] mailing list. >> Visit http://lists.osgeo.org/mailman/listinfo/foss-gps to manage your >> subscription >> For more information, check http://wiki.osgeo.org/wiki/FOSS-GPS >> > > > _______________________________________________ > This message is sent to you from [email protected] mailing list. > Visit http://lists.osgeo.org/mailman/listinfo/foss-gps to manage your > subscription > For more information, check http://wiki.osgeo.org/wiki/FOSS-GPS >
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