phunkyman wrote in message
m...
Hi,

My project is to realise an handheld lightning locator designed around
a Digital Signal Processor.
From what i learnt about lightning, i think i can detect storm by
detecting sferic signals. For the detection, i think that just an
antenna+ADC+ FIR filter will be enough but for the localisation i
don't know how to do. Should i make a FFT? I thought that as the high
frequencies of the sferic signal (about 7-8 KHz) move more rapidly
than the lowest, i could determine the distance of the storm from the
determination of the time between the arrival of the high frequencies
and the lowest ones. What do you think about that? Does a FFT allow me
to do that?

I'll be grateful for your help!!

Thanks.

Heck... I'd just go to an avionics shop and pick up a circa 1970's ' Ryan
Stormscope' out in the back. It was great... at the approach of a storm,
jump in an airplane, throw the master switch and watch the display---on the
ground!

RG