Re: [Discuss-gnuradio] New to Gnu Radio - Save signal to data for an analysis

[Dave NotTelling]

You should be able to read the output of that command with [1].  Make sure that you use the --file option before your output file name.  I tried the command you ran and didn't get any output because I didn't have --file before the output name.  Maybe a version difference?  

By default it seems that the rx_samples_to_file saves samples as SC16 (short complex 16 bit).  I had assumed it would be FC32 which would require the use of [2] to read.  You can change the output format (CPU format) with the --type option.  Check the output of --help to see the type options.

[1] https://github.com/gnuradio/gnuradio/blob/master/gr-utils/octave/read_cshort_binary.m

[2] https://github.com/gnuradio/gnuradio/blob/master/gr-utils/octave/read_complex_binary.m

On Mon, Jul 9, 2018 at 6:25 AM Wass Mailing <address@hidden> wrote:

Hello everyone,

I am new on Gnu Radio, and I saw that it was possible to save images of a signal, however I would like to recover this signal in the form of data in order to carry out a statistical analysis and to see the evolution on a frequency wifi on which I circulate traffic and can make comparisons. So I wanted to know if it was possible to recover my signal in the form of non-binary data file as I do this command below and can analyze them on Octave (Matlab). Finally if is it possible to know the architecture of the file generated by this command:

./rx_samples_to_file --freq 2457e6 --rate 1e6 --gain 38.0 --duration 20 usrp_samples2.dat

Cordially,

--Wassim BERRICHE

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