Sine-Wave Amplitude Estimation by a Two-Point Interpolated DFT Method Robust to Spectral Interference from the Image Component |
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| Daniel Belega, Dominique Dallet, Dario Petri |
- Abstract:
- This paper proposes a new two-point Interpolated Discrete Fourier Transform (IpDFT) method for the amplitude estimation of a sine-wave with high rejection capability of the spectral interference from the image component. The method is based on the Maximum Sidelobe Decay (MSD) windows. The analytical expression of both the proposed amplitude estimator and its variance due to additive white noise are derived. Computer simulations and experimental results show that the proposed estimator outperforms both the classical IpDFT and the three-point IpDFT methods when the number of acquired sine-wave cycles is small.
- Keywords:
- Amplitude estimation; multipoint interpolated DFT method; non-coherent sampling; spectral interference; statistical analysis.
- Download:
- IMEKO-TC4-2014-374.pdf
- DOI:
- -
- Event details
- IMEKO TC:
- TC4
- Event name:
- TC4 Symposium 2014
- Title:
20th IMEKO TC4 Symposium on Measurements of Electrical Quantities (together with 18th TC4 International Workshop on ADC and DCA Modeling and Testing, IWADC)
"Research on Electrical and Electronic Measurement for the Economic Upturn"- Place:
- Benevento, ITALY
- Time:
- 15 September 2014 - 17 September 2014