基于AOTF的高光谱偏振成像系统设计与实验

发布时间：2018-01-04 03:26

本文关键词：基于AOTF的高光谱偏振成像系统设计与实验　出处：《红外与激光工程》2017年01期 　论文类型：期刊论文

【摘要】：为获得目标和场景的偏振信息,基于线偏振片和声光可调滤波器(AOTF)设计了一套高光谱偏振成像系统。文中从AOTF的工作原理出发分析其偏振等效关系,随后给出了探测系统的具体结构,并对其光学系统的各元件进行了合理的参数配置。最后,利用设计的成像系统对林地背景中的涂覆三种不同颜色涂层的铝板进行了高光谱偏振成像实验,获得了场景的高光谱信息和偏振信息,并通过数据处理得到涂层与背景之间的强度对比和偏振对比特性。结果表明:涂层与自然背景的偏振特性存在一定程度的差异,对于不同自然背景中的目标,通过选择与背景特性差异较大的若干波长或波段,利用合适的探测方式进行探测,有利于实现快速准确的目标识别。
[Abstract]:To obtain polarization information for the target and the scene. A hyperspectral polarization imaging system is designed based on linear polarizer and acousto-optic tunable filter (AOTF). The polarization equivalent relationship is analyzed from the working principle of AOTF. Then the structure of the detection system is given, and the parameters of the optical system are configured reasonably. Finally. Using the designed imaging system, the hyperspectral polarization imaging experiments were carried out on aluminum plates coated with three different color coatings in the background of woodland, and the hyperspectral and polarization information of the scene were obtained. The strength contrast and polarization contrast between coating and background are obtained by data processing. The results show that the polarization characteristics of coating and natural background are different to a certain extent for the target in different natural background. By selecting several wavelengths or bands which are different from the background characteristics and using appropriate detection methods, it is advantageous to realize fast and accurate target recognition.
【作者单位】：脉冲功率激光技术国家重点实验室;中央军委装备发展部军事代表局驻北京地区第二军事代表室;
【基金】：国家863计划(2014AA0791)
【分类号】：O436.3;TP391.41
【正文快照】： 2.中央军委装备发展部军事代表局驻北京地区第二军事代表室,北京100191)0引言物体的表面特性作为其本身的一种重要属性,与物体相互作用后的电磁波(反射或散射)往往无形中携带着物体的表面特性所决定的偏振信息,而这种通过获取偏振信息(反射或散射光波的偏振态)进行物体成像探

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