室外环境中的关联成像研究进展  

Research progress of correlation imaging under outdoor environment

作　　者：常宸 孙帅 杜隆坤 聂镇武 何林贵 张翼[1,2,3] 陈鹏[1,2,3] 鲍可 刘伟涛 Chang Chen;Sun Shuai;Du Long-Kun;Nie Zhen-Wu;He Lin-Gui;Zhang Yi;Chen Peng;Bao Ke;Liu Wei-Tao(Institute for Quantum Science and Technology,College of Science,National University of Defense Technology,Changsha 410073,China;Interdisciplinary Center of Quantum Information,National University of Defense Technology,Changsha 410073,China;Hunan Key Laboratory of Mechanism and Technology of Quantum Information,National University of Defense Technology,Changsha 410073,China)

机构地区：[1]国防科技大学理学院,量子信息研究所,长沙410073 [2]国防科技大学,量子信息学科交叉中心,长沙410073 [3]国防科技大学,湖南省量子信息机理与技术重点实验室,长沙410073

出　　处：《物理学报》2023年第18期2-18,共17页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:62275270,62105365)资助的课题。

摘　　要：光学成像是人类不可或缺的信息获取方式之一,其在预警侦察、精确制导、交通运输和工业生产等军用和民用领域发挥着不可替代的作用.在室外环境中,由于背景光、杂散光和大气介质的影响,光学成像的分辨率、信噪比和作用距离等受到限制.近年来,在光学、物理、信息论及计算机等多学科的交叉融合发展的支撑下,新型光学成像技术不断涌现,为发展远距离、大视场、高信息通量的室外光学成像带来新的契机.关联成像作为新型主动成像技术之一,具有高灵敏、抗干扰、信息并行获取等特点,能够较好地应对室外光学成像中所面临的如远距离导致光功率急剧衰减、环境噪声干扰引起的低信噪比等问题,并能在一定程度上减少散射、湍流等导致的图像模糊等问题,是当前室外环境中光学成像的热门研究领域之一.本文从光学成像原理出发,分析室外环境中光学成像分辨率、信噪比、空间带宽积和成像距离的影响因素,重点介绍和梳理室外关联成像在成像系统、信噪甄别技术和成像算法等方面的研究进展,并浅析光学成像向更远距离、更广视场拓展的过程中需要研究的基础问题和待攻克的关键技术.Image,as a method of information acquisition,is indispensable for human beings,and it plays an irreplaceable role in military and civilian fields,such as detection and scouting,precision guidance,transportation,and industrial production.In the outdoor environment,the resolution,signal-to-noise ratio,and working distance of optical imaging are limited as result of the influence of background light,stray light,and atmospheric medium.In recent years,with the development of muti-discipline such as optics,physics,information theory,and computer science,the new optical imaging technologies continue to emerge,thus bringing new opportunities for outdoor optical imaging towards long-distance,large field of view and high information flux.As one of the new active imaging technologies,correlation imaging has the potential applications of robustness against turbulence and noise,and the possibility of beating the Rayleigh limit.It can deal with the problems better,such as sharp attenuation of optical power caused by long distances,detection of interference signals from environmental noise,and influence of turbulence.Based on the principle of optical imaging,this paper analyzes the factors affecting optical imaging,in terms of resolution,signal-to-noise ratio,spatial bandwidth product,and imaging distance under outdoor environment,focusing on the research progress of outdoor correlation imaging including imaging systems,signal-to-noise screening technology and imaging algorithm.In addition,we analyze the requirements of optical imaging for longer distances and broader field of view,and consider the fundamental problems and the key technologies.

关 键 词：关联成像 量子光学 室外环境 成像系统 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]