[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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