Re: A-GPS in Personal Locator AND pet, asset and car tracking devices
From: Doug Adomatis (adomatis_at_travelbygps.com)
Date: 07/30/04
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Date: Fri, 30 Jul 2004 11:24:48 GMT
"Andreas van Hooijdonk" wrote:
> Who will be the first to come with an A-GPS handheld receiver?
Andreas,
I assume you're talking about Assisted GPS, whereby the GPS device receives
ephemeris information on the GPS satellites via a ground-based wireless
network (cellular), which speeds up the initial position fix. It is amazing
how well this works. A friend of mine got a new Nextel i730 and I raced him
with one of my trusty Garmins to see who could lock-on the fastest. Using
this very unscientific method, every time it took the Garmin at least twice
as long to lock on. The Nextel reported the correct position in just a few
seconds after power up.
- Doug
www.travelbygps.com
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