Re: Positioning technology

["Robert M. Enger" <enger () comcast net>]

The "A" in A-GPS does not come from 12,500 miles away, as their web site asserts.
The "A" is ephemeris and other over-head info, and in this context is transmitted by the mobile phone network.

GlobalLocate Corp and SIRF both tout receiver designs that incorporate massively parallel correlator
technology.  This extends GPS receiver sensitivity down to -159dBmW.  

Galileo has been approved.  It is compatible Navstar and will more than double the GPS constellation.
This will provide greater likelihood of favorable signal reception conditions.




At 09:45 AM 4/1/2005, Roy wrote:

> GPS type technology that works indoors
>
> http://www.rosum.com/rosum_tv-gps_indoor_location_technology.html
>
> Roy Engehausen
>
>
> Robert Bonomi wrote:
>
> > > To: nanog () merit edu
> > > Subject: Re: potpourri (Re: Clearwire May Block VoIP Competitors )
> > > From: Michael.Dillon () radianz com
> > > Date: Fri, 1 Apr 2005 13:58:39 +0100
> > >
> > >
> > >   
> > >
> > > > > Why can't we have VoIP phones with built-in GPS receivers and a
> > > > >       
> > > > Because GPS doesn't work indoors.
> > > >