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Bispectrum Estimation Methods (Advanced Signal Processing Toolkit)

LabVIEW 2013 Advanced Signal Processing Toolkit Help

Edition Date: June 2013

Part Number: 372656B-01

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Bispectrum is a higher-order extension of power spectral estimation. A conventional power spectrum decomposes the power of a time series over frequency. In contrast, the bispectrum decomposes the third moment (skewness) of a time series over frequency. You can use the estimated bispectrum to detect asymmetric nonlinearities in a time series.

Use the TSA Bispectrum VI to compute the bispectrum of a time series. You can use this VI to compute the bispectrum based on the fast Fourier transform (FFT) or the AR model of the time series.


 

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