For David - re WWVB carrier recovery.
On squaring vs absolute values for carrier recovery. Never heard of
using absolute value.
As I said in my initial remarks - some perusal of the prior art is
helpful for this problem.
There are 70 years of literature on how to do this for any imaginable
purpose.
The squaring loop that I described and the Costas loop are classical
solutions. Both can
be made to work for this problem, though I prefer the former having
implemented it previously.
Same applies to narrow band tracking of weak signals. It is in the
literature.
This is not hard stuff nor is getting a GPS signal without the
neighbors finding out and
repeating the riot scene from "Young Frankenstein".
-73 john k6iql
_______________________________________________
time-nuts mailing list -- time-nuts@febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
