Abstract：Correlation detection was applied to near-infrared spectroscopy (NIRS) to extract the signal feature in the present paper. With metronidazole tablets as the object, the correlation both between each pure components and between pure metronidazole and different component-content mixtures were obtained. The results show that through correlation processing, the information feature of spectra could be separated and strengthened, and so better fitted to realize qualitative and quantitative spectrochemical analysis. Besides, the impact of noise could be lowered in this process. The conclusion is that correlation detection is an effective way to extract feature information and can be considered as a new solution to the problems of spectral superposition and low information rate in NIRS.
刘青格，邵定蓉，李署坚. 相关检测技术在近红外光谱分析中的应用[J]. 光谱学与光谱分析, 2005, 25(12): 1978-1981.
LIU Qing-ge, SHAO Ding-rong, LI Shu-jian. The Application of Correlation Detection to Near-Infrared Spectroscopy. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2005, 25(12): 1978-1981.
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