Dne 9.6.2009 12:12, David Read wrote: > Dear all, > > I did my first track last night using my GPS and was surprised to see the > trace wandering far from the road I was supposed to be on. See the yellow > line here: > http://tinypic.com/view.php?pic=25q662s&s=5 > I was cycling in a pretty straight line down the road I can assure you! Yet > the line goes up to 20m either side of the map line. > > Anyway, I did this with my Nokia 95 and WhereAmI+ software (will try Sports > Tracker next too), but this wild result doesn't seem good enough to do > mapping with. > > Is this because I have a rubbish GPS receiver or could it be that the > buildings of Islington are causing sufficient reflection/disturbance to the > signal?
Try to use some software with Kalman filter processing (Efficasoft GPS Utilities) and use external sensitive GPS receiver (chipset MTK 66ch –162dBm with good antenna, i.e. Qstarz BT-Q818X). MK _______________________________________________ newbies mailing list [email protected] http://lists.openstreetmap.org/listinfo/newbies
