论文部分内容阅读
本文对使用Hanning时间权函数的DFT所得到的频谱误差(包括幅值误差和频率误差)进行了解析的分析,从而得到了简单易行的补偿方法。当然,此法也可以方便地应用到各种FFT分析器中去,借以大大提高分析精度。
This paper analyzes the spectral errors (including the amplitude error and the frequency error) obtained by DFT using the Hanning time weight function, and obtains a simple and easy compensation method. Of course, this method can also be easily applied to a variety of FFT analyzer, to greatly improve the accuracy of analysis.