[79294] in North American Network Operators' Group
Re: Positioning technology
daemon@ATHENA.MIT.EDU (Robert M. Enger)
Fri Apr 1 16:44:20 2005
Date: Fri, 01 Apr 2005 16:40:09 -0500
To: Roy <garlic@garlic.com>, nanog@merit.edu
From: "Robert M. Enger" <enger@comcast.net>
In-Reply-To: <424D5E98.3020906@garlic.com>
Errors-To: owner-nanog@merit.edu
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.
>>>>
>
