研究干涉图处理与光谱复原的一种新方法

A new method for spectrum reproduction and interferogram processing

简要论述了自行研制的空间调制型偏振干涉成像光谱仪的工作原理及干涉图获取模式,采用三种不同的光谱复原方法分别对干涉图进行了处理和光谱复原,并对实验结果进行了分析比较.将非参数模型Music算法引进到干涉图的光谱复原处理中,极大的提高了复原光谱的分辨率,为超高分辨率的光谱复原分析技术提供了较好的数学模型,为提高光谱分辨率提供了可能的依据和新方法.

On the basis of researchon the theory and mathe re_aries of interference data collection of the spatially modulated polarization interference imaging spectrometer designed by us, this paper mainly analyses and compares three different methods of spectrum reconstruction and interferogram processing. SPecially, the authors introduce the nonparametric model of Music algorithm which is maturely used in power spectrum estimation into the spectrum reconstruction processing for the first time. This method prodigiously improves the resolution of reproduced spectrum, and provides a better math matic model for the improvement of resolving power in spectrum reproduction.