PLL stands for phase locked loop. It
eliminates phase variations.
On 10/22/2013 06:21 PM, Raydel Abreu (CM2ESP) wrote:
Hi Marcus,
Thanks for the tip. In a previous e-mail Marcus D.
Leech recommend me to use the Quadrature Demodulator
Block as something not perfect, but usable to check
for phase changes.
It works for me, as long as there is a pure carrier
without phase changes, and without care the amplitude,
the Quadrature Demod outputs a float number, quite
constant, if there is a phase change, the resulting
float number changes.
Now, help me with a doubt regarding PLL. Let's assume
the carrier is steady (zero drift), if there is a phase
change (not changing in freq) when passed through the
PLL, the phase changes are not conserved???
The idea of my small project is to correct any possible
frequency drift due to poor receiver stability while
conserving the incomming phase changes which is in part
produced by the ionosphere.
So, how can I correct the drift while keeping the incoming
changes of phase?
Kind Regards,
Raydel
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