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《Transactions of China Electrotechnical Society》 2005-08
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A Novel Algorithm for Reducing Spectrum Leakage Based on Equal Angle-Interval Sampling Principle

Chen Mingkai Zheng Xiangji Wang Xiaoqiang (Fuzhou University Fuzhou 350002 China)  
The cyclic shift character of base phasor in DFT is proposed and approved first in this paper. In order to solve the problem of reducing spectrum leakage, a new algorithm based on equal angle-interval sampling principle is proposed according to the cyclic shift character of base phasor. Simulation results show the new algorithm not only greatly reduces the spectrum leakage and improves the accuracy of harmonic analysis but also greatly reduces the calculation. So it can ensure the real time analysis. Moreover, the algorithm will have great application potentials.
【CateGory Index】: TM744
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