windowed interpolation FFT algorithm 加窗插值谐波分析法
For rectangular window FFT interpolation algorithm, the negative frequency components of harmonic components have a greater impact on the fundamental calculation error.
采用加矩形窗fft插值算法，谐波的负频分量对谐波计算的误差影响较大。
Harmonic analysis usually adopts FFT algorithm, the 280 Sample points need interpolation management, which make FFT faster.
谐波分析通常采用FFT算法，为了加快FFT的运算速度，需要对280个采样点进行插值处理。
This disseration introduces the application of interpolation algorithm, averaging signals and FFT algorithm to digital oscillograph.
本文就主要介绍了数字信号处理技术中的插值算法、FFT算法、以及平均和平滑算法在数字示波器中的应用。
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