You could put up a photo sensor, and time the delay between the
lightning flash as detected by the photo sensor and the signal from
the coil sensor.  Divide this by 5, and that will be the approxiamte
distance in miles.

                                                                    Regards,

                                                                        Jim
-----Original Message-----
From: David VanHorn <dvanhorn@CEDAR.NET>
To: PICLIST@MITVMA.MIT.EDU <PICLIST@MITVMA.MIT.EDU>
Date: Saturday, March 10, 2001 1:54 PM
Subject: Sensing lightning


>Looking for some esoterica.
>
>Given an array of three coils, one on each axis in space (X,Y,Z), I can
>determine a 3d vector to a lightning strike.
>
>How can I determine distance?
>
>I know this can be done, with a single sensor, to pretty reasonable
>accuracy, to a distance of about 300 miles.
>
>I just don't know how.
>--
>Dave's Engineering Page: http://www.dvanhorn.org
>Where's dave? http://www.findu.com/cgi-bin/find.cgi?kc6ete-9
>
>--
>http://www.piclist.com hint: The PICList is archived three different
>ways.  See http://www.piclist.com/#archives for details.
>
>
>

--
http://www.piclist.com hint: The PICList is archived three different
ways.  See http://www.piclist.com/#archives for details.