红外与激光工程, 2017, 46 (1): 0138003, 网络出版: 2017-03-29   

基于微偏振阵列的干涉型高光谱偏振成像方法

Interferometric hyperspectral polarization imaging method based on micro-polarization array
作者单位
1 南京理工大学 先进固体激光工业和信息化部重点实验室, 江苏 南京210094
2 南京理工大学 电子工程与光电技术学院, 江苏 南京 210094
摘要
光谱和偏振辐射特性是实现精细目标识别的重要光学参量, 融合光谱和偏振信息分量的光谱偏振成像探测技术有效利用两者的互补性, 提高在复杂背景环境下的目标识别能力, 在环境监测、**侦察和大气分析等领域具有巨大的发展潜力。围绕目标的光谱和偏振信息探测问题, 研究了一种基于微偏振阵列的干涉型高光谱偏振成像技术。在研究Sagnac干涉型高光谱成像技术的基础上, 利用微偏振阵列调制原理引入Stokes偏振分量信息探测。通过分析系统的工作原理, 设计了系统的干涉成像光路模型, 并对光谱信息反演方法以及偏振信息提取方法进行了讨论分析。搭建了实验装置, 对实际场景目标进行了光谱偏振成像实验, 得到了较好的实验结果。研究表明: 该光谱偏振成像技术不仅具有高光通量、高光谱分辨率的优点, 而且能够实现偏振信息的同步获取。
Abstract
The spectrum and polarization which were often used to identify the target were important radiation characteristics of the target. The detection technology that fused spectral and polarization information and owned the advantages of both signific antly improved the ability to effectively identify the target in a complex background. It played an important role in the field of environment monitoring, military reconnaissance and atmosphere analysis. Around the problem of detecting the target spectra and polarization information, a fusing imaging method to detect hyperspectral and Stokes polarization information was researched. The methed detected polarization information with the principle of micro-polarization array modulation on the basis of the Sagnac Fourier transform imaging spectrometer. Then a model of the imaging system was designed while the spectrum recovery method and extraction mode of the polarization information were discussed. A prototype was developed and good experimental results of an actual scene objects were obtained. The research shows that besides high throughput and high spectral resolution, the advantages that four polarized fringe patterns are obtained simultaneously also achieved in this method.

柏财勋, 李建欣, 周建强, 刘勤, 徐文辉. 基于微偏振阵列的干涉型高光谱偏振成像方法[J]. 红外与激光工程, 2017, 46(1): 0138003. Bai Caixun, Li Jianxin, Zhou Jianqiang, Liu Qin, Xu Wenhui. Interferometric hyperspectral polarization imaging method based on micro-polarization array[J]. Infrared and Laser Engineering, 2017, 46(1): 0138003.

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