From: first.last@iki.fi   
      
   haiticare2011@gmail.com writes:   
      
   > On Monday, January 13, 2014 12:31:22 PM UTC-5, Phil Hobbs wrote:   
   >> This is all just math, you don't have to wave a dead chicken over it.   
   > Well, if you average as you say, then you are including the accumulated   
   noise plus signal portion, ie, the entire empire state building. But if you   
   subtract this dead portion, that would be the noise floor at 30,000 or so in   
   Horowitz, then you have the    
   signal at high SNR. The signal emerges in his example after 100,000 sweeps, so   
   you do not need anything below 30,000 or so. Above that it's all clean signal.   
   An overall average will include the noise as well.   
      
   Phil is too modest to push you his book. You really should buy his   
   excellent book 'Building Electro-Optical Systems: Making It all Work',   
   ISBN 0470402296.   
      
   It covers optics, electronics and signal processing and I'm sure you'd   
   find it very useful to your project!   
      
   --   
   Mikko OH2HVJ   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)