| 全相位FFT密集谱识别与校正 |
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| 引用本文： | 黄翔东,王兆华,罗蓬,吕卫.全相位FFT密集谱识别与校正[J].电子学报,2011,39(1):172-177. |
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| 作者姓名： | 黄翔东 王兆华 罗蓬 吕卫 |
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| 作者单位： | 天津大学电子信息工程学院; |
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| 基金项目： | 国家自然科学基金(No.60802048); 天津市应用基础及前沿技术研究重点计划(No.10JCZDJC16100); 天津大学B类青年基金 |
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| 摘 要： | 为估计密集谱成分信号的频率和相位值,本文提出基于全相位FFT(all-phase FFT,apFFT)的密集谱识别与校正算法.利用全相位FFT良好的抑制谱泄漏性质和其特有的"相位不变性",本文方法可在传统振幅谱峰识别法失效情况下,根据相位谱是否满足平坦分布来识别密集谱与单频成分谱;结合全相位时移相位差校正法与相邻app...
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| 关 键 词： | 全相位FFT 谱泄漏 密集谱 谱校正 |
| 收稿时间： | 2009-09-17 |
Discrimination and Correction for Dense All-phase FFT Spectrums |
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| HUANG Xiang-dong,WANG Zhao-hua,LUO Peng,L Wei.Discrimination and Correction for Dense All-phase FFT Spectrums[J].Acta Electronica Sinica,2011,39(1):172-177. |
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| Authors: | HUANG Xiang-dong WANG Zhao-hua LUO Peng L Wei |
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| Affiliation: | HUANG Xiang-dong,WANG Zhao-hua,LUO Peng,L(U) Wei |
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| Abstract: | To estimate the frequency and phase information of the signals containing dense spectral components,a novel discrimination and correction method for dense allphase FFT(apFFT)spectrums is proposed.Due to apFFT's excellent performance in suppressing spectral leakage and the property of 'phase invariant',this paper can distinguish the dense spectrum from single-tone spectrum by judging whether the phase spectral lines behave as flat distribution,when the conventional discrimination method by identifying peak a... |
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| Keywords: | all-phase FFT spectral leakage dense spectrum correcting spectrum |
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