Channels that similar in content are highly correlated to each other. The complete high-resolution infrared spectral with thousands of channels can be compressed by some methods for data assimilation. 然而,红外高光谱的大量通道具有非常相似的光谱信号特征,在内容上相互之间高度相关,可以采用有效的方法将完整光谱信息压缩后用于同化。