Phone enhancements

David Schlesinger David.Schlesinger at palmsource.com
Mon Jan 29 16:43:03 CET 2007


My recollection was a little out of date. Units without WAAS correction seem
to get something like 10 to 25 meters resolution... Units with correction do
better...

See http://www.doylesdartden.com/gis/gpstest.htm

On 1/29/07 6:57 AM, "Graham Auld" <openmoko at graham.auld.me.uk> wrote:

>  
> 
> -----Original Message-----
> From: community-bounces at lists.openmoko.org
> [mailto:community-bounces at lists.openmoko.org] On Behalf Of Bryce Leo
> Sent: 29 January 2007 14:31
> To: community at lists.openmoko.org
> Subject: Re: Phone enhancements
> 
>>  You'd have to be doing some serious zigzagging: resolution of GPS at
>> street level is about 50 meters...
> 
> Exactly the point!! if you're zig zaggin that much you definately need to
> have the cops get called!
> 
> But on a serious note, how could it be 50 meters? That's about 165 feet...
> in certain cases about 3 different roads... Most of the Garmin products are
> at 1m/3feet resolution. I'm sure that most consumer devices are within about
> 2m/6ft. Do you have numbers that I don't in this case?
> 
> Bryce Leo
> 
> I'd have to agree on this one, I use GPS systems in several areas and
> generally see resolutions between 2 and 10 meters on average with 5-6 sats
> in use.
> 
> Granted to detect zig zags you'd need to be quite careful with how you used
> the data, telling the difference between weaving and dodging pot holes...
> 
> Maybe I should light the touch paper and suggest this be a use for the
> famous accelerometer that's been mentioned so much ;-)
> 
> Graham
> 
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