🚀 go-pugleaf

In article <353@egrunix.UUCP>, besler@egrunix.UUCP (Brent Besler) writes:
> 
> In general the speedometer in the cop car may be off a couple of MPH, and that
> can make big a big difference with regard to fines, etc.  Radar gun aren't 
> wired into a cops speedometer.  They use a separate radar beam to determine
> the speed of the cop car relative to the ground.

OK, so why not encorporate a small secondary radar, with a beam focused at the
ground very near the police vehicle (or even behind it) for a speed reference? 
The repeated distance measures on the target vehicle should work just as well
when both vehicles are moving.

> 
>>Now, since it's optical, it should be possible to use irregular matte finishes
>>and honeycomb materials to inhibit proper returns.  The Stealth mobile lives!
> 
> A black car is going to reflect the leat light in the near IR.  I am sure
> the IR detector in the device has to be very sensitive, as I am sure the
> desigeners too it into account.

Who said anything about black?  What we need is IR/near IR absorbance, the
visible spectrum color is independent.  For reference, look at the colored boat
tops that are selectively transparent to UV-A tanning rays.
--
C. Mark Eakin			Internet: Eakin@RSMAS.miami.edu
Univ. of Miami, RSMAS-BLR