Re: Useless questions

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Jim Lux by way of Terry Fritz <twftesla-at-qwest-dot-net>" <jimlux-at-earthlink-dot-net>

Actually, some form of CWFM might work here.. sweep the frequency of the
transmitter (many have a varactor in the cavity for just this purpose)...
digitize the audio return... take Fourier transform, etc....

----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Saturday, February 23, 2002 11:01 AM
Subject: Re: Useless questions


> Original poster: "Paul Nicholson by way of Terry Fritz
<twftesla-at-qwest-dot-net>" <paul-at-abelian.demon.co.uk>
>
> Jim, Ed, All,
>
> I wasn't thinking of trying to form any sort of an image with the
> radar, just hoping the radar would 'see' an overall reflection from
> a sphere of ionisation around the topload. Then
> a) The amplitude of the return would give info about the size
> and/or density of the ionisation - we could see how quickly it
> forms, and try to observe its persistence between cycles/bangs.
> b) Observe the surface of the 'ionisation sphere' move towards/away
> from the radar by looking for doppler-induced sidebands - the line
> width of the return would tell us how fast it was moving, and the
> homodyne is perfect for that, isn't it?  You'd tap into it right at
> the detector for max BW.
>
> As for interference, I don't know.  I'd guess that at 10Ghz you'd be
> up above most of the hash.  You'd need to take firm action to
> prevent the coil RF from getting into the radar DC supply, etc, eg
> battery powered, faraday cage, with small window for the radar to
> see out through?
> --
> Paul Nicholson
> --
>
>
>