[Openstreetmap] Inner city accuracy

[Thomas Walraet]

Christian van den Bosch a écrit :
> 
>> Are some GPS units better than others?
> 
> Apparently, recent GPS units based on the "Sirf Star III" chipset are 
> far better than the previous generation at detecting and locking onto 
> low-strength signals - I read one review where such a unit sitting in 
> the cup holder in a car stayed locked onto 8 satellites and gave 
> something like 4-metre accuracy. With my old Garmin eTrex Vista, I 
> consider myself lucky to get a fix like that out in the open holding my 
> unit up to the sky! In a car, I have to put the GPS on the dashboard to 
> get any worthwhile signal at all. I haven't had a chance to play with 
> one of these Sirf-based units myself yet though. Soon, my precious...!

I just bought a Garmin Nüvi for my dad today (don't tell him, it's his 
birthday tomorrow!)

I'm really impressed by the SirfStarIII chipset. The unit locks multiple 
sattelites even inside my appartment, where my ForeRunner don't detect 
any signal...