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[wxsig] Array of X1W-4 sensors to detrime direction and distance ?

Stanley Reynolds stanley_reynolds at yahoo.com
Wed Feb 13 07:11:27 UTC 2008

Thanks for the info I'm still brain storming but too sleepy for math but there must be a simple solution that is practical.
Thought of one other device from my flying days called a storm scope, it had a long prescient phosphor that would show direction and distance of lightning, that was before the digital days and cheap Doppler radar. It was all analog as far as I know and would keep you and your small plane out of storms. I will check in to it maybe I need a digital storm scope. Also may look into the patents of the TOA Systems people.


----- Original Message ----
From: Gerry Creager <gerry.creager at tamu.edu>
To: TAPR Weather Station SIG Mailing List <wxsig at lists.tapr.org>
Cc: Joe Jurecka <n5pyk at tamu.edu>
Sent: Wednesday, February 13, 2008 12:16:21 AM
Subject: Re: [wxsig] Array of X1W-4 sensors to detrime direction and distance ?

Using GPS for timing, one could expect 3 relatively closely spaced 
receivers to have common clock locking and be synched to within oh, say, 
20 ns.  More likely, it's much better than that; I'm being conservative.

Getting a baseline off 3 receivers is relatively trivial, and depending 
on the frequency of the impulse one can make some assumptions about 
height... if I understand what I think I've heard.  I've included 
someone with a working knowledge of Vaisala's lightning detection 
technology in the address list.

If one were to do this as a relatively long baseline study, one should 
be able to get significantly better than 1/4 mile resolution, I'd think. 
  Realize that the attitude detection GPS systems can resolve both 
shorter distances and very small angle and direction changes with 
baselines measured in terms of 1-3 meters.


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