光学精密工程2017，Vol.25Issue(6)：1441-1448,8.DOI:10.3788/OPE.20172506.1441
凝视型激光主动成像系统性能验证
Performance verification of staring laser active imaging system
摘要
Abstract
A staring laser active imaging system based on APD arrays and splitting beam illumination was designed,in order to study the imaging performance of the imaging system on non-cooperative target in target tracking.The relationship between laser echo power and target distance was analyzed theoretically,and the result shows that the echo power of targets beyond 200 m is less than 1 μW.In order to improve operating distance of the system,a trans-impedance amplifier OPA657N with high gain-bandwidth was adopted to improve the system gain.In addition,the crosstalk of channels at high trans-impedance was overcame by optimizing the element arrangement.A block detection of 8-adjacent connection algorithm was employed to realize target detection and two-axis target tracking based on the verification of distance equation.The results show that the proposed imaging system can achieve stable imaging on non-cooperative target in 200 m,and can obtain echo signal of non-cooperative target in 420 m.When travel of the target in the direction of pitch axis and yaw axis is more than 2.5°,the system can realize real-time detection and stable tracking of the target.关键词
激光主动成像/凝视型/目标跟踪/非合作目标Key words
laser active imaging/staring type/target tracking/non-cooperative target分类
信息技术与安全科学引用本文复制引用
徐正平,许永森,姚园,李刚,石磊,孙翯,于潇,沈宏海..凝视型激光主动成像系统性能验证[J].光学精密工程,2017,25(6):1441-1448,8.基金项目
中国科学院国防科技创新基金资助项目(No.CXJJ-14-S123) （No.CXJJ-14-S123）
吉林省科技发展计划资助项目(No.20150204022GX) （No.20150204022GX）
