In this paper the accuracy of the sine-wave frequency estimator returned by an iterative Interpolated Discrete Fourier Transform (IpDFT) algorithm based on a Maximum Sidelobe Decay (MSD) window is analyzed. The expressions for the contribution to the frequency estimation error of either the spectral interference from the sine-wave image component and wideband noise are derived. It is shown that two algorithm iterations ensure the minimum noise sensitivity achievable with the adopted window. The accuracy of the derived expressions is verified by means of computer simulations and validated by experimental results.
Accuracy of sine-wave frequency estimation by an iterative Interpolated DFT algorithm / Belega, Daniel; Petri, Dario; Dallet, Dominique. - ELETTRONICO. - (2015), pp. 1795-1800. (Intervento presentato al convegno 2015 IEEE International Instrumentation and Measurement Technology Conference, I2MTC 2015 tenutosi a Pisa nel 11th-14th May 2015) [10.1109/I2MTC.2015.7151553].
Accuracy of sine-wave frequency estimation by an iterative Interpolated DFT algorithm
Petri, Dario;
2015-01-01
Abstract
In this paper the accuracy of the sine-wave frequency estimator returned by an iterative Interpolated Discrete Fourier Transform (IpDFT) algorithm based on a Maximum Sidelobe Decay (MSD) window is analyzed. The expressions for the contribution to the frequency estimation error of either the spectral interference from the sine-wave image component and wideband noise are derived. It is shown that two algorithm iterations ensure the minimum noise sensitivity achievable with the adopted window. The accuracy of the derived expressions is verified by means of computer simulations and validated by experimental results.| File | Dimensione | Formato | |
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Accuracy of Sine-wave Frequency Estimation by an Iterative Interpolated DFT Algorithm.pdf
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