Abstract:
The superiority of interpolated discrete Fourier transform (IpDFT) has been proven in frequency estimation. However, the effects of negative frequency and strong noise re...Show MoreMetadata
Abstract:
The superiority of interpolated discrete Fourier transform (IpDFT) has been proven in frequency estimation. However, the effects of negative frequency and strong noise result in poor behavior when the length of the observation window is short. To this end, this paper proposes a novel twopoint IpDFT method for frequency estimation based on rectangular window and zero padding technique. The proposed method exploits the conjugate symmetry and parity of the unbiased signal model. This is done to eliminate both short and long-range spectral leakage caused by positive and negative frequencies. Besides, the impact of white noise can be maximally resisted by using the rectangular window and zero padding technique. Simulation results demonstrate that the proposed method outperforms existing interpolated DFT methods.
Published in: 2022 IEEE 12th International Workshop on Applied Measurements for Power Systems (AMPS)
Date of Conference: 28-30 September 2022
Date Added to IEEE Xplore: 16 December 2022
ISBN Information: