作　　者： ; ;

机构地区： 中山大学化学与化学工程学院化学系

出　　处： 《高等学校化学学报》 1996年第10期1522-1527,共6页

摘　　要： 采用样条小波基处理低信噪比的阶跃伏安法离散数据。仿真实验和化学实验结果表明，样条小波分析含强白噪声的信号时，能保真地提取出有用信号，信噪比（Ｓ／Ｎ）降低至０．１～０．２．这种方法具有不需设置目标函数、窗口函数、初值估计等优点，同时运算简单、节省储存空间。因此，样条小波运用于信号分析较现行方法优越，并具有广阔的应用前景。 For the first time,this paper presents spline wavelets application to step voltammetry signals,The method has advantages as follows:taking short time to deal with all data,having no necessary to find the relations with variables in any other systems,handling the target functions and initial conditions directly from sample data and obtaining few data necessarily.Some reasonable noises are added to the theoretical data,Signal-to-noise ratio varies from 0.1 to 100.The result is satisfactory and exciting even if the S/N ratio decreases to 0.15.Experimental data from a low concentration of Ti(Ⅳ)-H2C2O4 and W (Ⅳ)+Mo(Ⅳ)-HAPP-KClO3 system are utilized to demonstrate the application of wavelet analysis.The agreement between the theoretical and experimental results is excellent.

关 键 词： 阶跃伏安法 样条小波分析 样条小波基 离散数据

领　　域： [理学] [理学]