--- Em seg, 2/1/12, adioshun <[email protected]> escreveu:
> De: adioshun <[email protected]> > Assunto: [FOSS-GPS] Re: New Project with RTKlib & need help. > Para: [email protected] > Data: Segunda-feira, 2 de Janeiro de 2012, 12:10 > I don't need absolute position of two > vehicles. > > I just need the relative position between two vehicles. > > My aim is display the neighbor vehicle's location based on > my vehicle > location by GPS information exchange. > > if my location have 2m error and other vehicle has the same > 2m error with > the same direction, it is OK to me. > > -- adioshun, Taking your words, I'm not good at GPS relative terms and algorithms too. I think that the moving base must have an fixed and known lenght . This will not be your case. May be you can use a fixed base ( two antennas on one car ), but in this case, it would be better to put it over an reference station and let both car as rovers. I have realised some tests with one ublox-4T. I just have one and it was quite difficult to buy this one :-( I have stoped it for a while, but RTKLIB is great and nice and I plan use it. I got very good results, cm accuracy for a 10 km base line. I have modified a python code to set it up to output raw carrier phase and navegation data. It runs under *NIX. The basic code is here http://wiki.openmoko.org/wiki/Neo_FreeRunner_GPS regards, julio menezes PS: you can see my results here: gpl2.com.br/americo _______________________________________________ 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
