> Reflectometry based approaches already cover the cases where the object
> itself is the source of the radiation.

They may "cover the cases" but not needing a TerraHertz source sounds 'usef=
ul'.

The images that I have seen within the last year of image data that
is being used to infer eg firearms being present, were horrendously
rough and  appeared to have 'signal' nearly buried in noise.


    Russell
--=20
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