How Can I extract the Spectrum data from the "Spectrum Analyzer" in Matlab Simulink?

As shown in the title, I want to extract the power density data displayed in the "Spectrum Analyzer" into a matrix or a .mat file.

I have tried to print it in figure and use the brush tool, but it does not work, could anybody help me? Thank you!

Answer 1

[Khodour Al Kadry]

Hi Xuesu

You can the method getSpectrumData to extract the data from the scope. Please refer to the following documentation pages for more info and examples:

dsp.SpectrumAnalyzer getSpectrumData

https://www.mathworks.com/help/dsp/ref/dsp.spectrumanalyzer.getspectrumdata.html

Spectrum Analyzer Bloxk getSpectrumData

https://www.mathworks.com/help/dsp/ref/spbscopes.spectrumanalyzerconfiguration.html

-Khodour

Answer 2

[Anand Kumar]

Hope this works.

model = 'filename.slx';

open_system(model)

sablock = 'filename/Spectrum Analyzer';

cfg = get_param(sablock,'ScopeConfiguration');

cfg.CursorMeasurements.Enable = true;

cfg.ChannelMeasurements.Enable = true;

cfg.PeakFinder.Enable = true;

cfg.DistortionMeasurements.Enable = true;

sim(model)

data = getMeasurementsData(cfg)

specTable = getSpectrumData(cfg)