距离选通技术在运动目标激光主动成像中应用  

Research on range gated active laser imaging system for moving target

作　　者：范有臣[1] 赵洪利[1] 孙华燕[1] 郭惠超[1] 赵延仲[1] 

机构地区：[1]解放军装备学院,北京101416

出　　处：《激光与红外》2015年第12期1427-1432,共6页Laser & Infrared

基　　金：国家自然科学基金项目(No.61302183)资助

摘　　要：激光主动成像系统已被广泛应用,但是大多系统都是针对静止目标,在实际应用中对运动目标成像时受到限制。文中首先阐述了针对静止目标的激光主动系统,然后分析了运动目标成像时与静止目标的不同,分析了相对运动和固定焦距的光学系统的离焦效应,构建了3种运动目标激光主动成像体制,最后,在对静止目标成像的基础上,采用红外热像仪在大视场内跟踪目标,测距机实时测量距离信息的方式,建立了基于距离选通的运动目标激光主动成像系统。实验获得了距离500 m,运动速度为5 m/s气球运动目标的图像,突破了合作目标及多点定位的限制,为进一步跟踪快速运动目标提供了借鉴,同时也对运动目标激光三维图像的获取与处理研究提供了基础。Laser active imaging system has been widely used in many fields,but it mostly aims at static target,and it limits the application for the moving targets. The laser active imaging system for static target was presented,and then the difference between moving target imaging and static target imaging was analyzed. Defocus effects of relative moving and fixed focus optical system were analyzed,and three laser active imaging models of moving target were established.Finally,on basis of static target imaging,the laser active imaging system of moving target based on range gating was established by tracking object in big view of field with thermal infrared imager and measuring distance in real-time with laser range finder. Balloon image with distance of 500 m and moving velocity of 5 m / s was obtained in the experiment,which provides a reference for further tracking rapid moving target and lays a foundation for acquiring and processing3 D laser image of moving target.

关 键 词：激光主动成像 运动目标 距离选通 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]