On 12/15/14, 8:10 PM, Tom Van Baak wrote:
But to prove us wrong, put the antenna on a 17 hour turn-table, collect data
for 6 months, and then see if you see any 17h peaks in the FFT!
Clever idea, but..
Most rotary joints have more phase and amplitude variability than the
antenna.
So you're stuck with rotating back and forth with a cable that's flexing
and now you get to measure the phase variability of the coax.
You really need to have your entire GPS system antenna and receiver on
the rotating table (which will need to have temperature controls, etc.)
Oh, what a pit one can descend into with the goal of reducing everything
to a minimum error.
_______________________________________________
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.
