用于海面目标探测的中波红外实时偏振成像系统研究
投稿时间:2018-02-27  修订日期:2018-04-27  点此下载全文
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作者单位E-mail
韩平丽 西安电子科技大学 2008hanpingli@163.com 
刘飞 西安电子科技大学 feiliu@xidian.edu.cn 
魏雅喆 西安电子科技大学  
邵晓鹏 西安电子科技大学 xpshao@xidian.edu.cn 
基金项目:国家自然科学基金;国家自然科学基金青年基金;中国博士后科学基金面上项目;中国科学院长春光学精密机械研究所应用光学国家重点实验室基金;中央高校基本科研业务费
中文摘要:海面的强镜面反射导致强烈太阳耀光,造成海面目标探测中目标丢失。针对该问题,利用渥拉斯顿棱镜的分光特性及海面杂波的偏振特性,设计了一种中波红外实时偏振成像系统,经分光在同一探测器上获得两幅偏振态相互正交的目标场景偏振子图像。并通过偏振子图像计算场景偏振度,结合目标与背景的偏振特性差异,为准确识别目标提供依据。结果表明,该系统能够有效抑制太阳耀光,并能够充分利用偏振度实现目标探测。
中文关键词:太阳耀光  中波红外  偏振成像  渥拉斯顿棱镜
 
Real-time Mid-Infrared Polarization Imaging System Design for Marine Targets detection
Abstract:In marine target detection, a target could be lost by a mid-infrared detector if it’s located in sun glint area. To cope with this problem, a real-time mid-infrared polarization imaging system employing a Wollaston Prism was designed which utilized the polarization characteristics of sun glint. The Wollaston Prism enabled beam separation into ordinary and extraordinary rays which vibrate at two orthogonally polarized directions, and two images were acquired on the same detector plane with light focused by an imaging lens. Degree of polarization of the target scene could be calculated and assist to detect marine targets. It enables effective sun glint suppression and marine targets detection.
keywords:sun glint, mid-infrared, polarization imaging, Wollaston Prism
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