| 一种改进不规则采样信号频谱分辨率的算法 |
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| 引用本文： | 刘保童.一种改进不规则采样信号频谱分辨率的算法[J].贵州教育学院学报,2009,20(9):1-4. |
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| 作者姓名： | 刘保童 |
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| 作者单位： | 天水师范学院物理与信息科学学院,甘肃天水741000 |
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| 基金项目： | 2009年甘肃省教育厅科研项目 |
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| 摘 要： | 不规则采样信号的谱估计是时间序列分析中的一个重要问题。为改进不规则采样信号谱估计的分辨率，提出了一种抑制非均匀离散傅里叶变换频谱泄漏的算法，通过迭代非线性估计实现不规则采样信号离散傅里叶变换的计算。实际计算试验结果显示，这种方法能有效地抑制非均匀离散傅里叶变换结果中的频谱泄漏，提高DFT频谱的分辨率。
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| 关 键 词： | 不规则采样信号 谱估计 高分辨率 数据重建 |
An Algorithm for Improving Spectra Resolution of Irregular Sampling Signals |
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| LIU Bao-tong.An Algorithm for Improving Spectra Resolution of Irregular Sampling Signals[J].Journal of Guizhou Educational College(Social Science Edition),2009,20(9):1-4. |
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| Authors: | LIU Bao-tong |
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| Institution: | LIU Bao-tong (College of Physics and Information Science, Tianshui Normal University, Tianshui,Gansu,741000 China) |
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| Abstract: | Spectra estimation of irregular sampLing signals is an important issue in time series analysis. To improve spectra resolution of irregular sampling signals, this paper presents a suppression algorithm of frequency spectrum leakage for nonuniform Discrete Fourier Transform （NDFT）. The DFT computation of irregular sampling signals is performed via iterative nonlinear estimation. Actual computing results show that the approach can effectively suppress frequency spectrum leakage in NDFF results, improve the resolution of DFT spectra. |
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| Keywords: | irregular sampling signals spectra estimation high resolution data reconstruction |
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