Contribution of Interharmonic Component on the Interpolated DFT Frequency Estimator |
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| Daniel Belega, Dario Petri, Dominique Dallet |
- Abstract:
- This paper investigates the contribution to the sine-wave frequency estimator returned by the interpolated discrete Fourier transform (IpDFT) algorithm of a small amplitude interharmonic component located at least one bin apart the unknown frequency. An analytical expression for the frequency estimation error is derived assuming that a maximum sidelobe decay (MSD) window is employed and its accuracy is verified through computer simulations. Based on the derived expression some useful remarks are finally drawn.
- Keywords:
- error analysis, frequency estimation, interharmonic component, interpolated DFT algorithm, windowing
- Download:
- IMEKO-TC4-2019-034.pdf
- DOI:
- -