摘要
在实时信号谱分析中,经常采用传统的FFT算法,在需要计算不同时刻的全部或部分频谱时,FFT算法计算量较大。而滑动DFT算法,可以大大降低计算量,特别是可以只针对某些需要的谱线进行计算,提高了谱分析的灵活性与高效性。
The traditional FFT algorithm is frequently applied in real-time spectral analysis. Sometimes, one may need to obtain all or parts of the spectrum, and the calculation of FFT algorithm is larger than sliding DFT, especially for one or fewer spectrum that required. The sliding DFT algorithm improves the flexibility and computational efficiency of spectral analysis.
出处
《金陵科技学院学报》
2006年第2期36-39,共4页
Journal of Jinling Institute of Technology
