<p dir="ltr">Hi Anton</p>
<p dir="ltr">Really? You get by with that small patch antenna? Is that a good (green in rtkplot) RTK solution you get from that constant?</p>
<p dir="ltr">Regards<br>
Another Nick</p>
<div class="gmail_quote">Den 01/07/2014 21.11 skrev "Anton Strydom" <<a href="mailto:agstrydom@gmail.com">agstrydom@gmail.com</a>>:<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr">Hi Nick<div><br></div><div>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.</div>
<div><br></div><div>They are accurate on base line up to 10km where after accuracy drastically degrades. </div><div><br></div><div>I do all my testing in real time and do not post process.</div><div><br></div><div>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. </div>
<div><br></div><div>Attached are photographs of the units I am using</div><div><br></div><div>Regards</div><div><br></div><div>Anton</div></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Tue, Jul 1, 2014 at 8:50 PM, Danny Miller <span dir="ltr"><<a href="mailto:dannym@austin.rr.com" target="_blank">dannym@austin.rr.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000">
<div>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.<br>
<br>
RTKLib requires a GPS with RAW pseudorange outputs. The NV08C is
a good, cheap one to do it:<br>
<br>
<a href="http://www.nvs-gnss.com/contacts.html" target="_blank">http://www.nvs-gnss.com/contacts.html</a><br>
<br>
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.<span><font color="#888888"><br>
<br>
Danny</font></span><div><div><br>
<br>
On 7/1/2014 1:24 PM, Nick wrote:<br>
</div></div></div>
<blockquote type="cite"><div><div>
<div dir="ltr">Hello,
<div><br>
</div>
<div>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.</div>
<div><br>
</div>
<div>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.</div>
<div><br>
</div>
<div>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?</div>
<div><br>
</div>
<div>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,</div>
<div><br>
</div>
<div>Nick</div>
<div><br>
</div>
</div>
<br>
<fieldset></fieldset>
<br>
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