Estimation of Damping Factor and Signal Frequency for Damped Sinusoidal Signal by Three Points Interpolated DFT
Estimation of Damping Factor and Signal Frequency for Damped Sinusoidal Signal by Three Points Interpolated DFT
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三点插值 DFT 估计阻尼正弦信号的阻尼因子和信号频率
DOI:
10.1109/lsp.2019.2954792
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发表时间:
2019-12
影响因子:
3.9
通讯作者:
Li Guoqing
中科院分区:
文献类型:
--
作者:
Wang Kai;He Wen;Tai Siwen;Li Guoqing
This article propose a parameter estimation method for of a damped sinusoidal signal by the frequency domain interpolation. The three peaks of the discrete Fourier transform (DFT) result are used in the interpolation algorithm to estimate the damping factor and signal frequency. The proposed method can achieve a high accuracy because the influence of spectrum leakage from negative frequency are completely removed during the frequency domain interpolation. The comparison of different algorithms are discussed, which confirm the effectiveness of the proposed method.
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DOI:
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发表时间:
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影响因子:
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