Accurate Frequency and Damping Factor Estimation by Means of an Improved Three-point Interpolated DFT Algorithm |
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| Daniel Belega, Dario Petri, Dominique Dallet |
- Abstract:
- In this paper an algorithm for frequency and damping factor estimation of a real-valued noisy damped sinusoid is proposed. It is an extension of the three-point Interpolated Discrete Fourier Transform (3p-IpDFT) undamped sinusoid frequency estimator based on Maximum Sidelobe Decay (MSD) windows. Analytical expressions for the frequency and the damping factor estimators are provided and the related estimation errors due to the contribution of the spectral image component are derived and compensated. The accuracies of the proposed algorithm and other stateof-the-art frequency-domain based algorithms are compared to each other through computer simulations
- Keywords:
- frequency, damping factor, dft
- Download:
- IMEKO-TC4-2023-02.pdf
- DOI:
- 10.21014/tc4-2023.02
- Event details
- IMEKO TC:
- TC4
- Event name:
- TC4 Symposium 2023
- Title:
26th IMEKO TC4 Symposium and 24th International Workshop on ADC and DAC Modelling and Testing (IWADC)
- Place:
- Pordenone, ITALY
- Time:
- 20 September 2023 - 21 September 2023