[DSP-10] Here it is, the single antenna, brickette-only EME2 detection.

[Bob Larkin]

Hi Courtney,

Fabulous work!  This is indeed going towards the edges of weak-signal 
work!  I really like your enthusiasm, or is it passion, for this capability 
to dig for signals without limit!  Like EVE!!

One additional thought, or maybe one that you have already explored. 
Detection theory sets a threshold above the average noise power to allow a 
prescribed false alarm probability. The Central Limit Theorem says that the 
statistics of all long-term sums are Gaussian, so setting this threshold is 
done with the cumulative Gaussian tables.   A threshold at your 4.2 sigma 
point says that the "probability that is was NOT an EME echo" is 1 in 
50,000.  Sure sounds like EME to me!!

On the 2-meter noise levels, be sure to include the minor lobe Earth and 
Sun as well as galactic contributions.  An interesting test is to switch 
between the antenna and a load to measure this.

Keep up the great work!


73,
Bob W7PUA


At 12:43 AM 6/21/2006 -0700, Courtney Duncan wrote:
>http://home.earthlink.net/%7En5bf/eme2.html
>
>It's a fairly long story!
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