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.
Contribution of interharmonic component on the interpolated DFT frequency estimator / Belega, D.; Petri, D.; Dallet, D.. - ELETTRONICO. - (2019), pp. 160-164. (Intervento presentato al convegno 23rd IMEKO TC4 International Symposium on Electrical and Electronic Measurements Promote Industry 4.0 tenutosi a Xi'an nel 17-20 settembre 2019).
Contribution of interharmonic component on the interpolated DFT frequency estimator
Petri D.;
2019-01-01
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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione
