Brooke Clarke <brooke <at> pacific.net> writes:

> The counter measure is called a corner reflector.  Three flat surfaces 
> joined at right angles.  These can be made from 3 flat sheets forming 8 
> corner reflectors so you don't need to aim it, just put in a visible 
> place.  Any incoming ADS radiation gets sent right back to where it came 
> from.

But it gets dispersed. An improved countermeasure is a retroreflector with
adjustable focus. That's a bendable structure with a servo or a distance meter.

Peter




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