Study on Quasi-synchronous DFT Algorithm

被引：0
|
作者：
Pan, Feng [1 ]
Song, Qiang [1 ]
Chen, Ruimin [1 ]
Xiao, Yong [1 ]
Sun, Weiming [1 ]
Zhao, Wei [1 ]
Ma, Zhefei
机构：
[1] Guangdong Power Grid Corp, Elect Power Res Inst, Guangzhou 510080, Guangdong, Peoples R China
来源：
ADVANCES IN MANUFACTURING TECHNOLOGY, PTS 1-4 | 2012年 / 220-223卷
关键词：
quasi-synchronous DFT algorithm; the first sample point; frequency offset; simulation;
D O I：
10.4028/www.scientific.net/AMM.220-223.2257
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The principle of quasi-synchronous discrete fourier transform (DFT) algorithm was introduced and the simulation on the algorithm was carried out. The quasi-synchronous DFT algorithm is independent of the first sample point and it is able to start sampling at any moment. The maximum relative amplitude error and phase error of the algorithm are 0.05% and 5.4 degrees when the frequency of the signal is between 49.5 Hz and 50.5 Hz. The accuracy of quasi-synchronous DFT algorithm can be improved by scores of times than that of DFT algorithm.
引用
收藏
页码：2257 / +
页数：2
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