[OSM-talk] Good deal on Garmin GPS unit

Christopher Schmidt crschmidt at crschmidt.net
Thu Jul 6 14:06:41 BST 2006


On Thu, Jul 06, 2006 at 09:59:28AM +0100, Jon Stockill wrote:
> Nick Black wrote:
> 
> >RE GSM/Sirf II - I stand corrected!  I've emailed Sirf to see what they 
> >have to say about it, but it does seem to mean that the chips *can* be 
> >used with GSM signals.  I don't think that this is A-GPS though.
> 
> ISTR there's a requirement in the USA for newer 3G phones to be able to 
> provide a position when an emergency call is made - this could be why 
> the manufacturers are pushing this chipset, since it actually has a 
> chance of being able to provide a fix while indoors. When used in this 
> way it's not unreasonable to assume that the GSM cell data will be used 
> to help with GPS positioning.

As far as I know, the requirements for location are only triangulation
based, under the E911 legislation, and have been completed for several
years.

-- 
Christopher Schmidt
Web Developer




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