基于全相位谱分析的多频内插迭代频率估计器

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Abstract To accurately estimate the frequency components of a multiple-frequency signal, an all-phase spectral analysis-based interpolation iterative frequency estimator was proposed.Firstly, the all-phase spectral analysis was used to replace the FFT spectral analysis in this new estimator to reduce inter-spectral component interferences.Secondly, the frequency offset estimation mechanism was explored near the peak position of all-phase discrete time Fourier transformation (apDTFT) spectra.Thirdly, based on this mechanism, the corresponding interpolation and interative measures were designed to improve the accuracy of the proposed estimator.Both simulation results and actual data analysis showed that with the same number of multi-frequency signal observation samples, the proposed estimator has a higher estimation accuracy compared to Tsui estimator, so it is more valuable in application.

Key words： multiple-component signal inter-component interference apDTFT interpolation iterative estimator

Received: 31 May 2017 Published: 28 December 2018

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http://jvs.sjtu.edu.cn/EN/ OR http://jvs.sjtu.edu.cn/EN/Y2019/V38/I1/89

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