高等学校化学学报

高等学校化学学报 ›› 1995, Vol. 16 ›› Issue (7): 1020.

• 论文 • 上一篇    下一篇

中位数高保真数字滤波算法

缪华健, 胡上序   

  1. 淅江大学智能工程研究所, 杭州, 310027
  • 收稿日期:1994-07-19 修回日期:1995-03-13 出版日期:1995-07-24 发布日期:1995-07-24
  • 通讯作者: 胡上序
  • 作者简介:缪华健,男,27岁,博士研究生.
  • 基金资助:

    国家自然科学基金

High Fidelity Digital Filter Based on Medians

MIAO Hua-Jian, HU Shang-Xu   

  1. Institute of Intelligent Information Engineering, Zhejiang University, Hangzhou, 310027
  • Received:1994-07-19 Revised:1995-03-13 Online:1995-07-24 Published:1995-07-24

PDF (PC)

被引次数

15

摘要： 提出了一种采用中位数的滑动窗口滤波方法。所设置的窗口宽度为2m+1个数据点,使宽度大于m个数据点的峰被视为信号而无失真地保留,使宽度小于或等于m个数据点的峰被视为噪声而完全滤除。中位数法较之常用的加权和法具有滤波效果好、信号畸变小等优点。此法能保证谱峰高度和谱峰位置这两个重要参数不发生变化,故非常适宜用于仪器化学分析信号的滤波。

关键词: 仪器分析, 数据处理, 数字滤波

Abstract: Anew high fidelity filtering algorithm(HFFA) using medians in moving window is proposed. In case the window width is set to include 2m +1 data points, peaks with widths greater than m points are reserved without distortion, while peaks with widths smaller than m points are completely removed. Compared with other conventional filtering methods, in particular the widely used ones based upon weighted sums, this algorithm has advantages of better filtering effect and less distortion. Ensuring peak height and peak position, which are two major parameters, to be least changed, this new algorithm is especially feasible for filtering physico-chemical spectrum from noises.

Key words: Instrument analysis, Data processing, Digital filtering

TrendMD: