Marcus, Thanks for the reply! I apologize, the GR package is gr-aoa, not gr-music, and can be found here (https://github.com/MarcinWachowiak/gr-aoa). The NOAA broadcast is a NBFM signal. I am using 2 Signal Hound receivers ( https://signalhound.com/products/bb60c/) with 2 antennas spaced on a beam. Do I need to synchronize the 2 receivers with an external clock, or should they be fine free running independently?
Thank you very much, Michael Berman On Fri, Sep 1, 2023 at 9:25 AM Marcus Müller <mmuel...@gnuradio.org> wrote: > 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 >
