A new zoom algorithm and its use in frequency estimation

• Autorzy: Manuel D. Ortigueira , António S. Serralheiro , J. A. Tenreiro Machado
• Języki publikacji: EN

Abstrakty

EN

This paper presents a novel zoom transform algorithm for a more reliable frequency estimation. In fact, in many signal processing problems exact determination of the frequency of a signal is of paramount importance. Some techniques derived from the Fast Fourier Transform (FFT), just pad the signal with enough zeros in order to better sample its Discrete-Time Fourier Transform. The proposed algorithm is based on the FFT and avoids the problems observed in the standard heuristic approaches. The analytic formulation of the novel approach is presented and illustrated by means of simulations over short-time based signals. The presented examples demonstrate that the method gives rise to precise and deterministic results.

Słowa kluczowe

EN

Zoom algorithm; frequency estimation; FFT

• Wydawca: De Gruyter Open
• Czasopismo: Waves, Wavelets and Fractals
• Rocznik: 2015
• Tom: 1
• Numer: 1

Daty

otrzymano

2015-08-06

zaakceptowano

2015-09-16

online

2015-11-06

Twórcy

autor

Manuel D. Ortigueira

• CTS-UNINOVA, Department of Electrical Engineering, Faculty of Sciences and Technology, Universidade Nova de Lisboa, Portugal

autor

António S. Serralheiro

• Academia Militar and INESC, R. Alves Redol, 9, 2º, 1000-029, Lisbon, Portugal

autor

J. A. Tenreiro Machado

• Institute of Engineering, Polytechnic of Porto, Dept. Electrical Engineering, Rua Dr. António Bernardino de Almeida, 431, 4249-015 Porto, Portugal

Bibliografia

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Identyfikatory

DOI

10.1515/wwfaa-2015-0002