Re: Active vs Passive

In a message dated 4/13/00 10:12:14 AM Central Daylight Time, 
aebrain@dynamite.com.au writes:

<< 
 It's the difference between trying to aim a rifle at a target about 60
 metres
 away via a TV camera with a 4/10 second time delay, and aiming it via
 listening
  to the noise the target makes while wearing a blindfold.
 The data from the TV is twice as old as the sound (which takes 2/10 of
a
 second
 to travel the distance), but considerably better for targetting
purposes.
  >>

Besides you aren't stand in full view jumping up and down, waving your
arms 
and shouting into a bull horn "HERE I AM BULLY-BULLY! Come RUN OVER
ME!". 
Active sensors are like fighting a knife fight in pitch black - sure you

might catch him in the flashlight beam - but he sure as hell will see
the 
beam AND its source.