These look like 2pi jumps -- which is the an artifact if the unwrapping is not working well.
On Dec 10, 2013, at 1:55 PM, Johnathan Corgan <johnat...@corganlabs.com> wrote: > On 12/09/2013 07:26 PM, Juha Vierinen wrote: > >> I recorded a 10 second snippet of 50 kHz baseband signal in interleaved >> I and Q with 32-bit floating point format. > > The signal is definitely frequency modulated, but it doesn't appear to > be by data. Plotting the unwrap(diff(unwrap(arg(s))) shows a repetitive > structure of 10 ms (500 samples) width, as if something is stepping the > frequency up or down at 100 Hz in a random walk. > > -- > Johnathan Corgan, Corgan Labs > SDR Training and Development Services > http://corganlabs.com > <rfi-modulation.png><johnathan.vcf>_______________________________________________ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
