Development of recursive interpolated D/FFT for on-line and highly accurate frequency analysis

作者：Kuraishi Takashi; Kawada Masatake^*; Isaka Katsuo

来源：IEEJ Transactions on Electrical and Electronic Engineering, 2008, 3(5): 574-582.

DOI：10.1002/tee.20315

• interpolated discrete/fast fourier transform (IpD/FFT)
• recursive algorithm (RA)
• short-range leakage
• long-range leakage

Frequency analysis of digital signals based oil discrete/fast Fourier transform (D/FFT) inevitably has some inherent drawbacks Such as short-and long-range leakage. As one of the methods to overcome the above drawbacks. interpolated discrete/fast Fourier transform (lpD/FFT) has been proposed. lpD/FFT has the ability to improve accuracy considerably. We proposed IpD/FFT, combined with recursive algorithm (RA), to achieve on-line calculation. By evaluating the errors of the proposed Method Clue to short-and lon-range leakage. we showed that the proposed method call provide more accurate performance compared with recursive DFT (R-DFT).

• 出版日期2008-9