The new multidimensional time/multi-frequency transform for higher order spectral analysis |
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Authors: | L. Gelman I. Petrunin |
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Affiliation: | (1) School of Engineering, Cranfield University, Cranfield, MK43 0AL, UK |
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Abstract: | A new multidimensional time/multi-frequency higher order spectral(HOS) transform is proposed for transient signals with nonlinear polynomial variation of instantaneous frequency: the short time higher order chirp spectra (HOCS) based on the higher order chirp-Fourier transform and time-domain windowing technique. The proposed transform is compared with the classical multi-frequency HOS based on the Fourier transform. It is shown that the proposed transform is more effective for processing of transient processes in comparison with the classical transform. |
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Keywords: | Multidimensional transform Multi-frequency Spectral analysis High order spectra Chirp-Fourier transform |
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