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Date: Tue, 13 Jan 2009 16:01:53 -0500
From: "David I. Emery" <d..._at_dieconsulting.com>
To: TSCM-L2006_at_googlegroups.com
Subject: Re: [TSCM-L] {3250} Re: Sent to me.
Message-ID: <20090113210153.GB25990_at_pig.dieconsulting.com>
References: <20090112163236.A97869DA_at_resin17.mta.everyone.net> <20090113141032.67FD733DCC_at_absinthe.tinho.net>
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On Tue, Jan 13, 2009 at 09:10:32AM -0500, d..._at_geer.org wrote:
>
>
> Ya know, in addition to red-light cameras "they" could issue
> speeding tickets based on cell tower swapovers from moving
> vehicles. Better living through science...
I doubt this would hold up in court (and shouldn't), cell tower
cell swaps are subject to the vagrities of propagation and loading on
the sites... they hardly provide a precision location.
It is much more likely (though still rather UNlikely) that
the E911 precise location facility built into the cell system by FCC
fiat could be used establish two positions from which a travel velocity
could be computed. The accuracy of this is specified at 150 yards
95% of the time... but even that would be pretty easy to defeat in court
by arguing that this was clearly a case of the other 5%...
Of course CDMA cellular is actually capable of providing a range
rate to the tower (though I doubt the signal processors in the base
stations do anything with this) and if the tower is directly ahead or
behind your car this could perhaps serve as evidence you were going
over the speed limit...
--
Dave Emery N1PRE/AE, d..._at_dieconsulting.com DIE Consulting, Weston, Mass 02493
"An empty zombie mind with a forlorn barely readable weatherbeaten
'For Rent' sign still vainly flapping outside on the weed encrusted pole - in
celebration of what could have been, but wasn't and is not to be now either."
Received on Sat Mar 02 2024 - 00:57:16 CST