短波红外成像系统对激光光斑探测能力分析  

Analysis of detection capability of shortwave infrared imaging system on laser spot

作　　者：陆红强[1] 张璟玥[1] 张宝泉[1] Lu Hongqiang;Zhang Jingyue;Zhang Baoquan(Xi’an Institute of Applied Optics,Xi’an 710065,China)

机构地区：[1]西安应用光学研究所,陕西西安710065

出　　处：《应用光学》2018年第4期574-578,共5页Journal of Applied Optics

摘　　要：通过短波红外探测器灵敏度、目标和环境探测输出信噪比、对比度等分析,计算给出不同大气能见度、环境照度条件下,短波红外热像对外界景物和激光光斑的探测距离,并对理论分析进行试验验证。结果表明,在大气能见度1km^3km、环境照度1lx^1 000lx、阈值信噪比2.25~10、阈值对比度0.01~0.02的条件下,短波红外热像对激光光斑探测距离为0km^3.5km。Through the analysis on the sensitivity of short-wave infrared（SWIR）detectors,the signal-to-noise ratio（SNR）of the target and the environmental detection output and the contrast,the detecting distances of SWIR thermal image to external scenes and laser spots under different atmospheric visibility and ambient illumination conditions were calculated and theoretically analyzed,moreover,the theoretical analysis was verified by testing.The results show that the detection distance of the laser spot by the SWIR thermal image is less than 3.5 km in the conditions of atmospheric visibility 1 km～3 km,ambient illumination 1 lx～1 000 lx,threshold SNR 2.25～10,and threshold contrast ratio 0.01～0.02.

关 键 词：短波红外 激光光斑 探测能力 

分 类 号：TN929.12[电子电信—通信与信息系统]