AOTF高光谱探测系统对伪装目标的识别研究

Recognition of camouflaged target by hyperspectral imaging system based on acousto- optic tunable filter

为了获得目标和背景更精细的光谱信息,解决目前伪装目标与背景在一定波长范围内接近"同色同谱"而造成的目标识别难题,搭建了一套高光谱成像探测系统,并以典型林地背景中的伪装目标为例,对其进行探测与识别,获得目标和背景的高光谱信息以及强度对比度曲线。通过分析发现,伪装目标与背景难以实现完全的"同色同谱",在某些波长上目标的特征比较明显,强度对比度较大。表明通过筛选特定的波长能对伪装目标实现有效快速的探测与识别。这些结果对于高光谱探测系统的应用具有指导意义。

For acquiring more accurate spectral information of the camouflaged target and background in high resolution and solving the problem that the camouflage target’s color and character of spectral is close to that of the background,a hyperspectral image system was designed to detect the typical camouflaged target in the woodland background in this paper.Hyperspectral information and intensity contrast curve of the target and background were obtained.The analysis shows that the background and camouflage target’s color and character of spectral is hard to being all the same.Consequently,this system can effectively identify the camouflaged target in special wave bands by analyzing the contrast of intensity and hyperspectral information obtained.The results are valuable to the application of the hyperspectral detection system.