计算物理 ›› 1988, Vol. 5 ›› Issue (1): 80-86.

• 论文 • 上一篇    下一篇

加权离散Fourier变换

王璆, 蒋勇   

  1. 华东工学院应用数学系
  • 收稿日期:1986-10-31 出版日期:1988-03-25 发布日期:1988-03-25

DISCRETE FOURIER TRANSFORMATIONS WITH WEIGHT

Wang Qin, Jiang Yong   

  1. Appl. Math Dept, East China Institute of Technology
  • Received:1986-10-31 Online:1988-03-25 Published:1988-03-25

摘要: 本文给出DFT与FFT的一种变形——加权DFT和加权FFT及其有关性质,使方法误差得到改善,在一定误差范围内减少了样点的选取,从而加快了计算速度。尔后附带指出该方法在波谱分析、脉象研究等实际领域中的应用。

Abstract: In this paper DFT and FFT with weight are considered and their properties are studied. The modified the usual DFT and FFT by reducing the number of sample points mithin a certain error band and therefore speeding up the computation. Finally, we pointed out the practical applications of the new method in the fields of spectrum analysis, pulee tracing research and so on.