摘要
通过对信号与噪声奇异性的分析,得出信号与噪声的小波变换模极大值在各个尺度上的表现截然相反的结论。提出一种新的去噪算法并应用于受噪声干扰的示波测定信号的去噪处理。
The singularities of signals and noises are investigated. A conclusion is drawn that the wavelet modulus maxima of signals have contrary behaviors from that of noises. A new denoising algorithm is introduced and applied to remove noises from oscillographic signals of Glycyrrhizic acid′s concentration.
出处
《西北大学学报(自然科学版)》
CAS
CSCD
北大核心
1998年第6期471-474,共4页
Journal of Northwest University(Natural Science Edition)
基金
陕西省教委重点项目部分资助
关键词
小波变换
奇异性
信号去噪
示波测定
信号处理
wavelet transform
singularity
maxima
signal denoising
oscillgraphic determination