| 一种基于同步抽样技术的周期信号高精度DFT分析 |
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| 引用本文： | 代俊光.一种基于同步抽样技术的周期信号高精度DFT分析[J].电子科技大学学报(社会科学版),2000(1). |
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| 作者姓名： | 代俊光 |
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| 作者单位： | 电子科技大学自动化系CAT室!成都610054 |
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| 摘 要： | 提出了一种提高周期信号ＤＦＴ分析精度的同步抽样技术，对其原理作了详细的分析，给出了实现电路。文中以一组周期信号的ＤＦＴ分析为例，比较了信号谱的幅度和相位误差，其结果表明频谱精度大大提高。
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| 关 键 词： | 周期信号 抽样定理 离散傅里叶变换 同步技术 数字锁相环 |
A High-accuracy DFT Analysis Based on Synchronous Sampling Techniques |
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| Dai Jungian ,Chen Guangju.A High-accuracy DFT Analysis Based on Synchronous Sampling Techniques[J].Journal of University of Electronic Science and Technology of China(Social Sciences Edition),2000(1). |
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| Authors: | Dai Jungian Chen Guangju |
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| Abstract: | This paper presents a synchronous sampling technology to improve the accuracy of periodic signal DFT analysis. The theoretical support is analyzed in detail, and the hardware structure is introduced. As an example of application of this device, the results of the DFT analysis on a multi frequency signal are given, and the accuracy of these measurements is improved highly. |
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| Keywords: | periodic signal sampling theory digital Fourier transform synchronous technology digital phase lock loop |
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