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《Chinese Journal of Analytieal Chemistry》 2002-09
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An Adaptive Filter Method Based on the Dyadic Wavelet Transform

Zhong Hongbo 1,2, Li Guanbin *2, Liu Hui 3, Zheng Jianbin 3, Chen Liren 1 1(Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000) 2(Department of Chemical Engineering, Shandong Institute of Light Industry, Ji  
An adaptive filter method, which is based on the different characteristic of signal with noise in different wavelet scales, was founded. The method was directly comparing the absolute values of Corr 2(m,n) after being rescaled and W(m,n) to determine whether the data point W(m,n) should be kept. The standard deviation σ m of noise at each scale m was employed to stop the iterating. The de-noising process, the effect of the full width at half-maximum and noise quantum were investigated, and before and after de-noise results for simulated and capillary electrophoresis signals were compared. The experimental results show that it is a better adaptive filter method and can be used to wipe off the noise effectively.
【Fund】: 国家自然科学基金 (No .2 99775 0 18);; 国家教育部《高等学校骨干教师资助计划》;; 山东省自然科学基金;; 陕西省教育厅专项基金( 0 1jk0 76 );; 西北大学校内基金资助项目
【CateGory Index】: O658.9
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