WANG Jing-gang, CHENG Ming-xiao, LIN Jin-guo, et al. Study on wavelet packet noise removing method for CCD signal of Raman spectra[J]. 2010, 29(6): 4-7.
WANG Jing-gang, CHENG Ming-xiao, LIN Jin-guo, et al. Study on wavelet packet noise removing method for CCD signal of Raman spectra[J]. 2010, 29(6): 4-7. DOI: 10.13873/j.1000-97872010.06.013.
拉曼光谱CCD信号的小波包去噪方法研究
摘要
针对基于CCD拉曼光谱仪中拉曼光谱信号受到噪声干扰的问题
在详细讨论了CCD噪声来源和特性的基础上
提出了一种有效的小波包阈值去噪方法。实验结果表明:该方法可很好地提取信号的主要特征信息
能较好地保留拉曼光谱信号的边缘特征
取得了较好的滤波效果。
Abstract
Aimed at the problem of interference on Raman spectra signal of laser Raman spectrometer based on CCD sensor
an effective wavelet package of de-noising algorithm is proposed after the noise source and the characteristics of CCD are discussed in detail.The experimental results show that the method can extract effectively on main characteristics of signal and reserve edge property of Raman spectra signal and ideal filtering effect.