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<P><FONT SIZE=2>My recollection was a little out of date. Units without WAAS correction seem<BR>
to get something like 10 to 25 meters resolution... Units with correction do<BR>
better...<BR>
<BR>
See <A HREF="http://www.doylesdartden.com/gis/gpstest.htm">http://www.doylesdartden.com/gis/gpstest.htm</A><BR>
<BR>
On 1/29/07 6:57 AM, "Graham Auld" <openmoko@graham.auld.me.uk> wrote:<BR>
<BR>
> <BR>
><BR>
> -----Original Message-----<BR>
> From: community-bounces@lists.openmoko.org<BR>
> [<A HREF="mailto:community-bounces@lists.openmoko.org">mailto:community-bounces@lists.openmoko.org</A>] On Behalf Of Bryce Leo<BR>
> Sent: 29 January 2007 14:31<BR>
> To: community@lists.openmoko.org<BR>
> Subject: Re: Phone enhancements<BR>
><BR>
>> You'd have to be doing some serious zigzagging: resolution of GPS at<BR>
>> street level is about 50 meters...<BR>
><BR>
> Exactly the point!! if you're zig zaggin that much you definately need to<BR>
> have the cops get called!<BR>
><BR>
> But on a serious note, how could it be 50 meters? That's about 165 feet...<BR>
> in certain cases about 3 different roads... Most of the Garmin products are<BR>
> at 1m/3feet resolution. I'm sure that most consumer devices are within about<BR>
> 2m/6ft. Do you have numbers that I don't in this case?<BR>
><BR>
> Bryce Leo<BR>
><BR>
> I'd have to agree on this one, I use GPS systems in several areas and<BR>
> generally see resolutions between 2 and 10 meters on average with 5-6 sats<BR>
> in use.<BR>
><BR>
> Granted to detect zig zags you'd need to be quite careful with how you used<BR>
> the data, telling the difference between weaving and dodging pot holes...<BR>
><BR>
> Maybe I should light the touch paper and suggest this be a use for the<BR>
> famous accelerometer that's been mentioned so much ;-)<BR>
><BR>
> Graham<BR>
><BR>
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