Hi David,

Have you had a search down the links provided by Brooke's Sensors Page
http://www.pacificsites.com/~brooke/Sensors.shtml

I was under the impression that lightning location was done by triangulation
using VLF radio frequencies. The setup you describe would seem to imply
detection using distrubances to the earth's magnetic field.

Regards

Chris


> 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.
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>
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>
>

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