Provided by: gnuradio_18.104.22.168-5_amd64
gr_plot_psd_c - plot power spectral density using GNU Radio
gr_plot_psd_c: [options] input_filename
Takes a GNU Radio binary file (with specified data type using --data-type) and displays the I&Q data versus time as well as the power spectral density (PSD) plot. The y-axis values are plotted assuming volts as the amplitude of the I&Q streams and converted into dBm in the frequency domain (the 1/N power adjustment out of the FFT is performed internally). The script plots a certain block of data at a time, specified on the command line as -B or --block. The start position in the file can be set by specifying -s or --start and defaults to 0 (the start of the file). By default, the system assumes a sample rate of 1, so in time, each sample is plotted versus the sample number. To set a true time and frequency axis, set the sample rate (-R or --sample-rate) to the sample rate used when capturing the samples. Finally, the size of the FFT to use for the PSD and spectrogram plots can be set independently with --psd-size and --spec-size, respectively. The spectrogram plot does not display by default and is turned on with -S or --enable-spec.
-h, --help show this help message and exit -B BLOCK, --block=BLOCK Specify the block size [default=8192] -s START, --start=START Specify where to start in the file [default=0] -R SAMPLE_RATE, --sample-rate=SAMPLE_RATE Set the sampler rate of the data [default=1.0] --psd-size=PSD_SIZE Set the size of the PSD FFT [default=1024] --spec-size=SPEC_SIZE Set the size of the spectrogram FFT [default=256] -S, --enable-spec Turn on plotting the spectrogram [default=False]
gr_plot_char(1) gr_plot_const(1) gr_plot_fft_c(1) gr_plot_fft_f(1) gr_plot_float(1) gr_plot_int(1) gr_plot_iq(1) gr_plot_psd_c(1) gr_plot_psd_f(1) gr_plot_qt(1) gr_plot_short(1)