Re: NEC-LIST: Most 'useful' sizes(diameters) for sparse arrays?

If you are going to repeat history with sparse arrays, you should give a
look at the extensive work done by Y.T. Lo and others at the University
of Illinois back in the 60s and 70s on Random Arrays. The radio
telescope at Illinois was using a sparse array in the 70s based on some
of the earlier work. Bill Davis

> There is some literature that suggests that unevenly spaced sparse arrays
> are best in terms of a "performance for a given number of elements spread
> over a given amount of space".. maybe that's an area to fool with...
>
>
> At 08:01 PM 2/13/2003 -0500, Fractenna_at_aol.com wrote:
> >My colleagues and I are having some fun simulating sparse arrays. The issue
> >is translating the fun to something useful. Any suggestions on what array
> >SIZES (in wavelengths) are most sought after in sparse arrays? ( I know the
> >desired resolution sets this up; that's not the question:-)) For example,
> >radio astronomers want sparse arrays that are many thousands--even millions--
> >of waves in diameter, while some sparse arrays in commercial apps are only a
> >few waves in size. Wondering if there is a 'sweet spot' in the dynamic range
> >of diameters(sizes) that would be most useful to think about.
> >
> >Appreciate any feedback.
> >
> >73,
> >Chip N1IR
> >--
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>
> James Lux, P.E.
> Spacecraft Telecommunications Section
> Jet Propulsion Laboratory, Mail Stop 161-213
> 4800 Oak Grove Drive
> Pasadena CA 91109
> tel: (818)354-2075
> fax: (818)393-6875
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