[TenTec] 2.033

[Duane A Calvin]

Yes, that is one way to do it, but you get highly correlated signal plus
whatever noise is on that frequency.  The other approach removes the
non-correlated noise leaving the signal alone ( or close enough for gov't
work.)   My DSP theory is not fresh in my memory any more, but the
discussions here about DSP only being a narrow filter does not map with
my experience in DSP.  Maybe it's old knowledge, but BW filtering doesn't
get the entire job done, it seems to me.

        73,  Duane



On Wed, 03 May 2006 17:29:06 -0400 Sinisa Hristov <shristov at ptt.yu>
writes:
> Grant Youngman wrote:
> 
> > The are many ways to skin the proverbial cat.  Isn't the net 
> effect of
> > passing highly correlated signals (cross-correlated with a signal 
> of known
> > frequency or auto-correlated) and rejecting relatively 
> uncorrelated signals
> > (noise) a very narrow filter centered at the frequency of the 
> highly
> > correlated signal (or signals).
> 
> 
> Exactly so.
> 
> 
> 73,
> 
> Sinisa  YT1Nt, VE3AE
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> 


--------------------------------------
Duane Calvin, AC5AA
Austin, Texas

http://home.austin.rr.com/ac5aa