Accurate frequency estimation by using three-point interpolated discrete fourier transform based on rectangular window

K Wang, H Wen, G Li - IEEE Transactions on Industrial …, 2020 - ieeexplore.ieee.org
Windowed interpolated discrete Fourier transform (DFT) has been well-studied to deal with
the spectral leakage and picket fence effects in frequency estimation. When the number of …

An iterative three-point interpolation algorithm for one/multiple damped real-valued sinusoids

H Xu, S Zhou - Digital Signal Processing, 2023 - Elsevier
Aiming at improving the accuracy of parameter estimation, this paper proposes an iterative
algorithm for one/multiple damped real-valued sinusoids. Firstly, an initial three-point …

Multiple Aliasing of Windowed Real-Valued Signal as a Cause of Accuracy Limitation of DFT Methods

K Hajek, Z Kohl - IEEE Access, 2025 - ieeexplore.ieee.org
DFT spectral signal analysis is a widely used method for various types of signal processing
due to its several advantages. In the case of incoherently sampled real-valued signals …

[HTML][HTML] 基于负频率频谱干扰消除的高精度低频间谐波检测算法

刘型志, 周全, 张淮清, 田娟, 陈文礼 - 重庆大学学报, 2020 - qks.cqu.edu.cn
采用离散频谱分析的快速检测电网信号中存在的间谐波时, 离散傅里叶变换(DFT)
后的负频率频谱泄露干扰会降低检测精度. 为有效消除负频率频谱泄露干扰 …

A novel three-point windowed interpolation dft method for frequency measurement of real sinusoid signal

K Wang, Y Gao, L Zhou - IEICE Transactions on Fundamentals of …, 2019 - search.ieice.org
The windowed interpolation DFT methods have been utilized to estimate the parameters of a
single frequency and multi-frequency signal. Nevertheless, they do not work well for the real …

Comparative of Influence of Noise on Frequency Estimation Provided by Three Points Interpolated Discrete Fourier Transform

X Shao, H Wen - Fluctuation and Noise Letters, 2021 - World Scientific
The paper compares the accuracy of two different three points Interpolated Discrete Fourier
Transform (M3IpDFT and C3IpDFT) algorithms in the presence of Gaussian white noise. The …

Enhanced Interpolated DFT Based Fault Waveform Analysis for the Primary and Secondary Fusion Switch

L Ruihuang, Y Jinggang, J Yongyong… - 2020 Asia Energy …, 2020 - ieeexplore.ieee.org
In order to meet the special requirements of the primary and secondary fusion of the ground
fault test signals of the switch, this paper proposes an enhanced three-point interpolated …