[OSM-talk] Quality of Sirf star 3 tracks disappointing...

[Emil Vaughan]

On 7/11/06, Emil Vaughan <emil79 at gmail.com> wrote:
> On 7/11/06, Nick Black <nickblack1 at gmail.com> wrote:
> > On 7/11/06, Emil Vaughan <emil79 at gmail.com> wrote:
> > > On 7/10/06, Barnett, Phillip <Phillip.Barnett at itn.co.uk> wrote:
> > > > It looks like the Sirf III isn't the best thing for urban use?
> > >
> > > What do people think, is it worth continuing with it or do i need a
> > > gps60 or something ?
> >
> > Thats kind of a hard question to answer.  There are other peole using
> > Sirf III chipsets who are contributing, and more and more peole are
> > going to be gettign them as time goes on.  I guess you have to assess
> > whether contributing slightly innaccurate tracks will add to the
> > project or not.  I'd be tempted to say: go for it.  If you use JOSM or
> > OSMEDITOR to view the traces your could always check to see that the
> > tracks weren't totally screwed, and then upload.
> >
> > NIck
> >
>
> Hmm I'll carry on recording my journeys this week then. They seem to
> be almost always wrong, compared to Google Earth (or is this normal?)
> and the ways already in the map (I haven't managed to get other
> people's tracks yet, there was a 500 server error..... ). They do seem
> to get better when in a wide road or an open area, e.g. in Hyde Park
> my tracks are very accurate, almost to the metre probably.
>
> Hopefully soon I'll be able to save the raw NMEA strings - at the
> moment I'm using GEtrack (i'm not impressed with it......it should be
> FOSS, it would get a lot better really quickly....) as it's the only
> thing available that works on my N80 at present AFAIK (I'm new to
> this).
>
> Emil
>

Just to add to my own post, the tracks in many places do seem like
they've been reflected off buildings - this is quite apparent in
Google Earth.

Emil