快速傅氏算法 meaning in English
fast fourier algorithm
Examples
- Single chip needs too much time to calculate and we ca n ' t detect power quality real time for example , and the sampling rate must synchronize the signal frequency . when sample multi - channel signal in turn , it must have time delay between two samplings , so the phase angle difference between each channel signal is ca n ' t be avoid and so on . those problems must be solved
本课题分析了目前电能质量的各种检测方法，认为快速傅氏算法（ fft ）是首选方法，但是基于定时采样的fft计算会产生频谱泄漏，为了减少这个泄漏需要进行加窗处理，这需要增加采样数据，导致显著增大计算量。