[aprssig] Vehicle Signatures

Brian Webster bwebster at wirelessmapping.com
Wed Dec 5 19:22:20 EST 2012

What about the license plate scanning technology? Scan the plates and/or see
if the software will also recognize name and model badges on the cars or
even use image recognition software. At a fixed camera angle that should
work well. Ever upload a bunch of pictures to Picasa or Facebook and have
the software give you the option to tag one name to a bunch of pictures it
already recognizes as the same person in multiple images? IP enabled cameras
are cheap these days, you could still scan for RFI with a time stamp and
match the RFI capture with the image time stamp and maybe start to build of
an RFI signature database that way.

Thank You,
Brian N2KGC

-----Original Message-----
From: aprssig-bounces at tapr.org [mailto:aprssig-bounces at tapr.org] On Behalf
Of Steve Noskowicz
Sent: Wednesday, December 05, 2012 7:00 PM
To: TAPR APRS Mailing List
Subject: Re: [aprssig] Vehicle Signatures

Crazy idea for sure...  BUT  I'm thinkin' you wouldn't need a road sensor
with the kind of garbage they must be spewing.  KW of PWM.

A motor I designed was a 350 W (1/2 HP) DC Brishless and without any line
filter it destroyed any AM radio reception around. Of course if these cars
have an AM radio they must be doing some RFI stuff....
  So it'll take some measuring.  The Volt owner would certainly be willing
to investigate this - he's a ham. 

Bob, '
  Do you (can you) run HF in your Prius?

73, Steve, K9DCI  USN (Vet)  MOT (Ret)  Ham (Yet)

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--- On Wed, 12/5/12, Keith VE7GDH <ve7gdh at rac.ca> wrote:

> From: Keith VE7GDH <ve7gdh at rac.ca>
> Subject: Re: [aprssig] Vehicle Signatures
> To: "TAPR APRS Mailing List" <aprssig at tapr.org>
> Date: Wednesday, December 5, 2012, 4:33 PM Bob WB4APR wrote...
> > I wonder how much of a "signature" is emitted by
> various
> > makes and models. Particularly, I was wanting to
> detect
> > the presence of Electric Cars.
> Interesting, but where were you going to install the coil in the road? 
> Not too many places would allow you to dig up a road and install a 
> sensor coil. 8-) Still, the first thing would be to see if they do 
> radiate anything that was detectable. Of course, you could just push 
> for legislation that required that all new vehicles have some kind of 
> RFID tag embedded, and for "black" boxes.
> 73 es cul - Keith VE7GDH
> www.ui-view.org
> --
> "I may be lost, but I know exactly where I am!"
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