基于压缩感知的红外大视场高分辨成像系统设计  

Design of Infrared Imaging System with Wide Field of View and High Resolution Based on Compression Sensing

作　　者：姜来 霍娟 杨静琦 王智斌 朱云亮 周洁 马喆 Jiang Lai;Huo Juan;Yang Jingqi;Wang Zhibin;Zhu Yunliang;Zhou Jie;Ma Zhe(X LAB,The Second Academy of CASIC,Beijing 100854,China)

机构地区：[1]中国航天科工二院未来实验室,北京100854

出　　处：《激光与光电子学进展》2022年第8期235-242,共8页Laser & Optoelectronics Progress

摘　　要：针对红外探测器件大阵面技术缺乏、单孔径红外探测系统难以兼顾大视场和高分辨率等问题,设计了一种基于压缩感知技术的红外大视场高分辨成像系统。该系统由成像物镜和中继透镜组成,成像物镜对场景进行大视场高分辨率一次成像,一次成像的像面经空间光调制板的调制后由中继透镜二次成像在探测器阵列,利用图像重建算法可将探测器阵列接收的图像进行恢复。设计结果显示,所提系统的工作波段为3.8~4.8μm,成像物镜具有F/1.999的大数值孔径,视场为±16°,像元数达到1280×1024,中继透镜像元数达到640×512,成像质量完全匹配所选的探测器阵列。此外,对比现有红外单孔径探测系统,所设计的系统具有大视场、高分辨、结构简单紧凑等优势,在航空遥感探测领域具有较大的应用前景。Due to the lack of large scale technology of infrared focal plane arrays and the conflict between the wide fieldofview and high resolution for a single aperture infrared detection system,an infrared imaging system with wide fieldofview and high resolution based on compression sensing was designed.The system consists of the objective lens and the relay lens.Firstly,the imaging objective can image a scene with wide fieldofview and high resolution.Secondly,the relay lens images the image surface of a single image modulated by a spatial light modulator.Finally,the scene image received by detector arrays can be restored by image reconstruction algorithm.The design results show that the working wavelength of the system is 3.8‒4.8μm,and the objective lens has large numerical aperture of F/1.999.The fieldofview is±16°,and the pixel number can reach 1280×1024.The pixel number of the relay lens is 640×512 with a good matching with the detector array.Comparing to the current single aperture infrared detection system,the designed system has the characteristics of the wide fieldofview,high resolution,and simple and compact structure,and has wide potential application in the field of aerial remote sensing.

关 键 词：成像系统 压缩感知 中红外波段 物镜 中继透镜 航空遥感 红外探测器阵列 

分 类 号：TN216[电子电信—物理电子学]