XPost: sci.math.num-analysis, sci.math, comp.dsp   
   From: rbj@audioimagination.com   
      
   On 4/9/12 11:49 PM, Jerry Avins wrote:   
   > On 4/7/2012 12:25 AM, Bret Cahill wrote:   
   >> Is it common to use matched filtering to recover the original signal   
   >> in optics?   
   >   
   > Matched filtering is used to _recover_ a signal only by those who don't   
   > understand it. It is used to _determine_the_presence_or_absence of a   
   > particular signal -- the one that matches the filter -- in a degraded   
   > channel.   
      
   oooh, careful with the troll, Jerry.  i told him that last week and he   
   wasn't particularly appreciative.   
      
   troll: "determining the presence or absence of a particular signal" is   
   what we mean by "detection".  and that wikipedia example was one of   
   detection *not* recovery (but it's a lousy article anyway).   
      
   --   
      
   r b-j                  rbj@audioimagination.com   
      
   "Imagination is more important than knowledge."   
      
   --- SoupGate-Win32 v1.05   
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