基于近似最佳一致逼近原理的FIR数字滤波器  

FIR Digital Filter Design Based on Proximate Best Uniform Approximation Theory

作　　者：秦毅[1] 毛永芳[1] 秦树人[1] 

机构地区：[1]重庆大学机械学院测试中心,重庆400030

出　　处：《重庆大学学报（自然科学版）》2006年第5期12-15,共4页Journal of Chongqing University

基　　金：国家自然科学基金资助项目(50575233)

摘　　要：在对经典FIR数字滤波器的设计方法进行研究基础上,提出了一种基于近似最佳一致逼近原理的FIR滤波器设计方法.介绍了近似最佳一致逼近原理的理论基础,并将它应用于FIR DF的设计.给出了用近似最佳一致逼近方法设计FIR滤波器的具体过程,然后通过实例表明该方法设计的滤波器在通带和阻带内具有较好的特性,且计算简单、计算量小,有较好的应用前景.After investigating into the design of classical FIR digital filter, a method of FIR filter design based on proximate best uniform approximation is proposed. The paper introduces the theoretical basis of the proximate best uniform approximation theory in detail, and applies it to the design of FIR digital filter. The procedure of designing a FIR filter with the proximate best uniform approximation method is given. The example shows that the filter designed by this method is of good performance in both pass band and eliminated band, and comparatively little calculation related, and hence it is of promising prospect to be applied.

关 键 词：逼近 切比雪夫 多项式系 节点插值 FIR 数字滤波器 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]