一种基于同步抽样技术的周期信号高精度DFT分析

A High-accuracy DFT Analysis Based on Synchronous Sampling Techniques

  • 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。

     

    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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