示波信号能谱的傅里叶自去卷积法  

Fourier Self-Deconvolution for Power Spectrum of Oscillographic Signal

作　　者：郑建斌[1] 杨小曼[1] 刘辉[1] 

机构地区：[1]西北大学分析科学研究所,西安710069

出　　处：《分析化学》2003年第3期304-306,共3页Chinese Journal of Analytical Chemistry

基　　金：国家自然科学基金 (No .2 0 2 75 0 30 );教育部科学技术研究重点项目 (No .0 2 187);高等学校骨干教师资助计划 (GG 15 0 710 0 6 2 877);陕西省教育厅自然科学专项基金 (No .0 1JK0 76)资助课题

摘　　要：以支持电解质溶液产生的示波计时电位信号作为线性函数、去极剂本身的示波信号作为去噪函数 ,提出了一种傅里叶自去卷积新方法———示波信号能谱的傅里叶自去卷积法。研究了噪音和切口重叠等对去卷积结果的影响。与其他傅里叶自去卷积法相比较 :该方法具有操作简单、不会引起负的旁瓣效应。A new method of Fourier self-deconvoluti on (FSD), Fourier self-deconvolution for power spectrum of oscillographic signal, was proposed. In this method, the oscillographic signal of pure base solution and depolarizer was used as line shape function and apodization function, respectively. Effect of noise and overlapped incision caused by the depolarizer on the result of the deconvolution, and the sensitivity of incision after deconvolution was investigated. Compared with classical FSD and other deconvolution methods, Fourier self-deconvolution for power spectrum of oscillographic signal can not only increase the relative incision depth, but also improve the resolution for the overlapped incision and the sensitivity.

关 键 词：化学计量学 信号处理 示波分析 傅里叶自去卷积法 

分 类 号：O657.62[理学—分析化学]