空间光调制过程是空间编码压缩光谱成像方法中影响光谱成像数据保真度的重要环节。为拓展现有压缩光谱成像空间光调制的编码种类，揭示其与成像数据保真度的关联规律，针对压缩光谱成像中的编码调制效应展开研究。基于成像系统物理模型，拓展现有二值化编码振幅调制方法，开展非二值化连续型编码振幅调制研究，进而验证相位型调制方法的施用方法，以全波段图像均方根差作为评价成像数据保真度的参数，量化各类编码调制方法与成像数据保真度的关联。构建具有特定空间特征和谱线特征的仿真场景，实施压缩光谱成像仿真实验，比对六类空间编码调制效应下的成像效果，验证非二值化振幅编码调制的施用可行性及相位型空间光调制对提高此类成像方法数据保真度的有效性。

The spatial light modulation process makes direct effort on imaging data fidelity of the spatial coding compressive spectral imaging. To expand existing coding patterns for spatial light modulation in compressive spectral imaging and reveal its relation it and the imaging data fidelity, the research on coding modulation effect in compressive spectral imaging is carried out. Based on the physical model of imaging system, present binaryzation coding amplitude modulation method is extended, the research on non-binaryzation continuous amplitude modulation is adopted and the phase modulation method is also verified. The root-mean-square error of the full-spectrum images is worked out so that the correlation between modulation coding pattern and the imaging data fidelity is quantitatively revealed. The simulation scenery of certain spatial and spectral features is constructed so that the imaging simulating experiment is carried out. The imaging results under six kinds of spatial coding modulation conditions are compared. The employing feasibility of non-binaryzation amplitude coding modulation is verified and the ralidity of data fidelity improved by the spatial light phase modulation is testified.