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Article Dans Une Revue Transactions on Systems, Signals and Devices - Shaker Verlag Gmbh Année : 2010

Multipoint Interpolated DFT Method for Frequency Estimation

Résumé

The accuracy of the normalized frequency estimation of a mul- tifrequency signal component by Interpolated Discrete Fourier Transform (IpDFT) method is affected by systematic errors. In [1], a Weighted Multipoint Interpolated Discrete Fourier Trans- form (WMIpDFT) method has been proposed to reduce these errors. This method uses only the rectangular and the 2-term maximum sidelobe decay windows. In this paper, the results of the method proposed in [1] are generalized to the maximum sidelobe decay windows with order higher than two. When the H-term maximum sidelobe decay window (H ≥ 2) is used and the number of interpolation points is set to (2J + 1), the expres- sion of the normalized frequency estimator is given. Then, the performance of the proposed WMIpDFT method is analyzed by means of computer simulations and experimental results.
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Dates et versions

hal-00567400 , version 1 (21-02-2011)

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  • HAL Id : hal-00567400 , version 1

Citer

Daniel Belega, Dominique Dallet. Multipoint Interpolated DFT Method for Frequency Estimation. Transactions on Systems, Signals and Devices - Shaker Verlag Gmbh, 2010, pp.1-16. ⟨hal-00567400⟩
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