连续样条小波变换用于分解重叠峰的研究  

Resolution of Overlapped Peaks Using Continuous Spline Wavelet Transform

作　　者：张永清[1] 王立世[1] 莫金垣[2] 

机构地区：[1]华南理工大学应用化学系,广东广州510640 [2]中山大学化学与化学工程学院,广东广州510275

出　　处：《分析测试学报》2003年第6期39-41,共3页Journal of Instrumental Analysis

基　　金：国家自然科学基金资助项目 (29975033) ;广东省自然科学基金资助项目 (980340) ;华南理工大学自然科学基金资助项目 (E5126247)

摘　　要：以B_样条小波为分析小波 ,提出了用于分析化学重叠信号解析的新方法———连续样条小波变换 ,结果表明 :连续样条小波变换应用于分析化学信号的处理 ,能使峰变窄同时还能提高信号的信噪比 ,是一种新型有效的重叠信号解析方法 ,能从含噪声重叠信号中直接得到重叠峰的峰数目及其相应的峰位置。A novel method,continuous spline wavelet transform(CSWT),was proposed for resolving overlapped peaks.The second-order,third-order and the forth-order B-spline wavelet were used as analyzing wavelet,respectively.It was shown that the peaks after processing were narrower and their signal-to-noise ratio was enhanced in comparison with the overlapped peaks.It was found also that the second-order B-spline wavelet was superior to the other two wavelets.The results obtained for the simulated spectra confirmed that the proposed CSWTwas an effective method for resolving overlapped peaks.

关 键 词：连续样条小波变换 重叠峰 分析化学 信噪比 信号处理 

分 类 号：O657[理学—分析化学]