Hi Henry, There is a script, read_complex_binary.m, that is included with gnuradio. You can use that with Octave or Matlab to read the I/Q recordings from a file as a time vector.
-Trip On Sat, Mar 19, 2016 at 12:43 PM, Henry Barton <kw...@outlook.com> wrote: > Is there any simple formula for plotting spectrum (finding the intensity > of each frequency component, Hertz by Hertz) from IQ recordings? > Specifically I need to know how to read an IQ file and somehow dissect > clusters of samples. I’ve written programs that deal with large amounts of > data from files, so I think this shouldn't be too hard. I want to write my > program so that it takes in a multi-hour IQ file and averages it like the > 24-hour band averaging on the University of Twente WebSDR site. This would > allow users to average an IQ file over time and see the most active > frequencies and times. There’s no utility for this yet, and I’d like to > write it and release it on my blog. > > On a side note: is it possible to go “frame-by-frame” in an IQ file? For > example, to follow the hops of a 900-MHz FHSS device. > > _______________________________________________ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > >
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