The Research and Improvement of APFFT Algorithm

摘要：

　　Discrete Fourier Transform (DFT) is widely used in spectrum analysis.All Phase Fast Fourier Transform (APFFT) is proposed to improve FFT.It has merits such as phase invariance and small spectral leakage.But APFFT is a concrete algorithm.There arc no parameters to adjust the result.The paper researches APFFT by changing the length of the overlapping data segments of APFFT.This change gives APFFT some new characteristic and some meaningful results are got.

关键词： APFFT FFT Welchs method Barletts method

作者: Jietao Diaoa Jing Guo Nan Li Wei Yi Sen Liu Qiang Li Hui Xu

作者单位: ESSS Center, School of Electronic Science and Engineering,National University of Defense Technology, Changsha, China

会议类型: 国际会议

会议名称: 2012 2nd international Conference on Materials Science and Information Technology(2012第二届材料科学与信息技术国际会议)(MSIT2012)

会议地点: 西安

会议语种:英文

页码: 1841-1845

在线出版日期: 2012-08-24（万方平台首次上网日期，不代表论文的发表时间）