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

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XuesuTeng
XuesuTeng 2020-1-6
回答： Anand Kumar 2022-4-27
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!

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回答（2 个）

Khodour Al Kadry
Khodour Al Kadry 2021-7-14
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
Anand Kumar
Anand Kumar 2022-4-27
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)

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