[Ground-station] System Architecture (17 June 2020) - Review Request

[David Vieira]

 Michelle, all - 
My initial reactions reminds me, I was once involved with a commercial RFID link, written by a standards committee of Architects (and no designers / implementer ), that had:5 different forward link BW.   (separate filters, switches, gains, cost, size, etc.)8+ different Reverse link data Rates, multiple M Codes, etc.
I learned:a) Architects LOVE features that grow with binary weights.  And really LOVE even more binary options that multiple with other binary weighted features.(and why wouldn't they?  It naturally falls out of the thought process.  Very cool and exciting!)
b) It took enormous time and energy to implement and verify each mode.c) Adaption algorithms take extra energy above and beyond to implement and verify.
d) no one really wants to be adapt to the edge of a link budget.  The apple religion of "it just works" (always!) is successful for a reason.{---- even record breakers and EME experimenters will tell you how much extra link margin they had!}
and the kicker --->e) *Really 3 buckets solve the large majority of trade-off needs.  small/medium/large; slow/average/fast.  (you get the idea).
f) When implemented, even the architect on staff (coauthor of said voluminous standards doc), who had to support and make recommendations to customers --- ONLY used the edge cases to make his own life simple.  If you look at the math, he only used a small subset of the A*B*C*D*E available options.
My $0.02KI6CLA

    On Wednesday, June 17, 2020, 11:13:55 AM PDT, Michelle Thompson via Ground-Station <ground-station at lists.openresearch.institute> wrote:  
 
 Attached is today's cut of the System Architecture document for AREx. This is also our baseline design.  

We have a significant milestone coming up in the 25 June 2020 hardware meeting for AREx. 

I need this document to be as good as it can be by then. 

Please review. All comment and critique welcome and encouraged. 

-Michelle W5NYV


  
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