摘要
从频谱分析的角度描述了二项式系数滤波的功能 ,通过对几种常用的滤波方式谱曲线进行比较 ,阐明了只有二项式系数滤波不会产生相位移动 ,能有效地保留空间域复合变量基本变化的相位 ,因而它能很好地反映趋势背景 ,正确地圈定异常 。
The function of the binomial coefficient filtering is described on the basis of the theory of spectrum analysis. Through the comparison of the spectrum curves of several conventional filtering methods, It is shown that only the binomal filtering cann't result in phase-shifting and can effectively retain the phase of basic variation of the poly-varible in spacedomain. Therefor the binomial filtering method can refect the tendecy well,demarcate the blunder right and receive wide application.
出处
《桂林工学院学报》
2000年第4期379-382,共4页
Journal of Guilin University of Technology
关键词
二项式系数滤波
傅氏变换
谱曲线
binomial coefficient filtering
Fourier transform
spectrum curve
