时空调制红外高光谱二维光谱成像气体探测

Two-Dimensional Spatial and Temporal Hybrid Modulation LWIR Hyperspectral Imaging for Remote Gas Detection

基于时空调制干涉原理,设计了长波红外时空调制高光谱成像实验装置CHIPED-1,摆脱了对平台运动的依赖。采用热气球为低空平台,演示了长波红外时空调制干涉原理,并对乙醚、DMMP、NH3和SF6等四种气体样本进行了低空探测试验。实验表明复杂背景下,高光谱方法应用在红外有机蒸气VOC的二维光谱探测领域,相对于宽波段热成像方法,具有灵敏度高、抗干扰能力强和识别种类多等诸多优势。

Based on the principle of temporal and spatial modulation interference,a long wave infrared space time modulation hyperspectral imaging experimental device CHIPED-1was designed,which was free from the dependence of the platform motion.Using hot air balloon as low altitude platform,the principle of long wave infrared temporal and spatial modulation interference was demonstrated,and four kinds of gas samples,such as ether,DMMP,NH3 and SF6,were tested.Experimental results showed that,in the complex background,hyperspectral method was applied in the two-dimensional spectra of the infrared organic vapor VOC detection field.Relative to the broad band thermal imaging method,CHIPED-1has many advantages,such as high sensitivity,strong anti-interference ability and multi-recognition.