长波红外高光谱偏振特性的伪装目标识别方法

Identification Method of Camouflaged Objects Based on Long-Wave Infrared Hyperspectral Polarization Characteristic

光谱偏振探测可以综合获得目标的光谱、强度、偏振态等参数,有利于改善对目标的探测和识别能力。本文介绍了基于红外高光谱偏振特性的伪装目标识别方法,搭建了长波红外高光谱偏振测量系统,开展了对两类伪装目标在不同温度下的高光谱偏振成像实验,获取了有效的实验数据并进行处理分析。结果表明:两类伪装目标即使涂覆相同的表面涂料,但受基底材料的热传导率影响,在相同温度差异下红外偏振特性的提升量明显大于辐射亮度,并有着温差越大偏振特性提升量差异越大的规律,同时显示出波段选择性。利用两类伪装目标偏振特性提升量的差异,有效解决相同温度下伪装目标无法识别的难题。

Spectral polarization detection can obtain rich target parameters including spectrum,radiant intensity,polarization state and so on,which is beneficial to improving the ability of target detection and identification.Identification method of camouflaged objects based on long wave infrared hyperspectral polarization characteristic was introduced in this paper.The measuring system of long wave infrared hyperspectral polarization was set up.The measuring experiments of polarization characteristic of two types of camouflaged objects at different temperatures were carried out.Effective experimental data were obtained and analyzed.The results showed that:due to the influence of basal material thermal conductivity,the upgrade of spectral degree of polarization of two types of camouflaged objects with the same coating is significantly greater than spectral radiance at the same difference of temperature.As the difference of temperature increases,the upgrade difference of spectral degree of polarization increases.The band selectivity rule is also showed.The identification problem will be effectively solved by use of the upgrade difference of spectral degree of polarization of two types of camouflaged objects.