二项式系数滤波的谱特征  

The spectrum character of binomial coefficient filtering

作　　者：王静[1] 潘梦清[2] 

机构地区：[1]长春科技大学地学信息系统研究所,吉林长春130026 [2]桂林市建设规划局测绘院,广西桂林541002

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

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.

关 键 词：二项式系数滤波 傅氏变换 谱曲线 

分 类 号：TN713.7[电子电信—电路与系统] O211.64[理学—概率论与数理统计]