Wally wrote:
Jeff Morris wrote:
What is ghosting?

An effect that can sometimes be seen on terrestrial TV sets - the set
receives the direct signal from the transmitter, and a secondary
signal which comes in a little later, typically the result of the
transmitted signal bouncing off of a building or hill.

It strikes me that a wide horizontal beam would result in a range of
reflections, or, perhaps more accurately, a reflection period which
is a function of the beam width and rotation speed.

So, at any given moment, the receiver is getting a return which is based on
the range of topographical features being hit by the beam. If those features
are different distances away (or different materials/densities?), then the
return would, I think, be confused - all sorts of possibilities for what
would appear to be several targets in the nominal direction; maybe harmonic
weirdness. I dunno - I'm half-guessing.



--
Wally
www.makearatherlonglinkthattakesyounowhere.com
Things are always clearer in the cold, post-upload light.