Re: FM Carrier Recovery for AOA Calculation

[Marcus Müller]

Not familiar with the details of NOAA signalling, but isn't the carrier of an FM signal 
*the FM signal*?

For a DoA estimate, you'd correlate the different receive chains with each other to get a 
phase; so, as long as the signals do have some bandwidth that makes the problem less 
ambiguous, it'd work with any signal. I'm sadly not familiar with gr-music (and can't find 
it on cgran.org), but MUSIC works as long as the signals at the different receive antennas 
are correlated and noise is not. You do not have to preprocess your FM signal!

Best,
Marcus

On 01.09.23 17:09, Michael Berman wrote:
> Does anybody know if there is a way to recover a carrier of an FM signal to use for an 
> Angle of Arrival calculation?  I am using GNURadio and gr-music and I am trying to use the 
> NOAA Weather Radio signals.
>
> Thank you very much,
>
> Michael Berman