[mmaimcal] Re: [Almasci] [Fwd: Antenna Differences]

[Mark Holdaway]

Richard said

>
> Thanks.  I understand it now - the legs mainly show up as interference 
> between the blockage pattern and the Airy pattern and it doesn't make 
> any difference whether the Airy pattern is that of its own dish or the 
> other one, so you see both crosses in the V*A patterns.
> Do your calculations include the signals scattered by the legs or just 
> the blockage?


Just blockage -- how would you handle the scattering calculation?  That 
seems hard --
it seems that at every point on the feed leg, I'd have to radiate 
anisotropically about the
dish and add in the places that were in phase.
 
   -M