摘要
根据喇曼散射信号比较弱的特点,应用一种改进的小波阈值去噪方法对喇曼光谱进行去噪处理。通过酒精的喇曼光谱为实验,该方法能够避免软硬阈值法的缺点,能够发挥小波去噪的优点,重构光谱图失真小,能很好地抑制噪声,又保留喇曼光谱的细节信号,改善小波去噪的效果。
Because Raman spectrum is feeblish, a improved algorithm of raman spectrum De-noising is presented in this paper.The improved method can avoid the disadvantage of the soft threshold or hard threshold. The experimental result shows that the method is superior to the method of soft threshold or hard threshold respectively. It can get rid of the noise and keep the detail of the Raman spectrum.
出处
《计算机与数字工程》
2007年第7期27-28,122,共3页
Computer & Digital Engineering
关键词
小波变换
小波去噪
喇曼光谱
wavelet transform,wavelet de-noisy,raman spectrum
