Optical techniques benefit from being non-contact and large-range compared with chemical gas sensing methods. Tunable Diode Laser Absorption Spectroscopy （TDLAS） and COrrelation SPECtroscopy （COSPEC） are two of the most widely-used optical techniques.
相比于化学方法,光学技术具有非接触、测量范围大等优点,其中可调谐二极管激光吸收光谱（TDLAS）和关联光谱（COSPEC）是两种主流技术。
参考来源 - 气体监测的可调谐多模二极管激光关联光谱技术研究·2,447,543篇论文数据，部分数据来源于NoteExpress
将关联向量机应用于高光谱影像分类， 实现高维空间中训练样本不足时分类器的精确建模。
The relevance vector machine (RVM) is used to process the hyperspectral image in this paper to estimate the classifiers precisely in the high dimensional space with limited training samples.
进一步又讨论了噪声的关联时间对原子激光谱密度的影响。
Effects of the correlation time of noises on the spectral density also are discussed.
用红外光谱（IR）和程序升温脱附（TPD）考察了催化剂的酸性随硅铝比变化规律，并将这些规律与实验结果关联起来进行了讨论。
The relationship between the acidity and catalytic properties of ZSM-5 zeolite catalysts was discussed on the basis of the experimental resu…
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