Results: Two-dimension spectrum of Radix Polygoni Multiflori from different sources have their obvious ir characters.

结果：不同产地何首乌的二维相关红外光谱谱图特征明显不同。

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In this paper, instead of using the bispectrum to detect the quadratic phase coupling, a new method based on -dimension spectrum is developed.

本文在原有利用双谱对二次相位耦合进行分析的基础上，提出了维谱分析方法。

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Then, inputting the two-dimension spectrum entropy into the SVM classification, the result shows that SVM has fine compute efficiency and classified ability.

进一步将二维谱熵作为支持向量机（SVM）分类器的输入量，结果表明SVM具有良好的分类能力和计算效率，可以满足在线监测的要求。

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