光电目标反猫眼探测技术效能评价系统
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摘要
为了对"反猫眼探测"技术的效能进行量化及客观评价,本文提出一种基于目标回波图像处理的"反猫眼探测"效能评价技术,利用计算窗内图像质心变化作为目标可探测性判据,通过对"反猫眼探测"技术改进前后的目标进行对比实验,对其最大可探测距离及相同探测距离上最小照明激光功率的等效能评价参数进行了相对测量,实现对"反猫眼技术"效能的量化评价。对评价系统的原理进行分析、设计了原理样机并以"反猫眼探测"技术改进前后的瞄准镜作为目标进行了外场实验。实验结果表明,当测试距离由500m变为1km时,最小照明功率的下降率变化1.5%;当照明激光功率由500mW变为300mW时,最大探测距离增加率变化1.8%。由此证明本文所提出评价方法在不同实验条件下所得出结果一致性较好,可客观、准确地反映"反猫眼探测"技术的效能,从而为相关领域研究提供支持。
Anti cat′s eye detection is currently an active area of research in the optoelectronics countermeasure field.The basis of this investigation was the objective evaluation technology of effectiveness for quantification purposes.An effectiveness evaluation technology based on cat′s eye echo image processing was proposed.The detectability of a target was evaluated based on the change of the image centroid in a calculation window.Moreover,quantitative evaluation of anti-cat′s-eye detection technology was realized by contrastive measurements of key parameters such as the maximum detection range & minimum power of the illuminating laser in the same range.The principles of the evaluation system were discussed.In addition,aprototype was designed and tested in an outfield using two sighting telescopes as targets both before and after anti-cat′s-eye detection procedure.The results indicate that when the test distance changes from 500 mto 1 km,the decrease in the minimum illumination power is 1.5%.When the illumination laser power changes from 500 mW to 300 mW,there is an increase in the maximum detection distance of 1.8%.This implies that the proposed evaluation technology are consistent under different experimental conditions,and could be used to objectively and accurately quantify the effectiveness of the anti-cat′s-eye detection technology.It also has the potential to support research in related fields.
Anti cat′s eye detection is currently an active area of research in the optoelectronics countermeasure field.The basis of this investigation was the objective evaluation technology of effectiveness for quantification purposes.An effectiveness evaluation technology based on cat′s eye echo image processing was proposed.The detectability of a target was evaluated based on the change of the image centroid in a calculation window.Moreover,quantitative evaluation of anti-cat′s-eye detection technology was realized by contrastive measurements of key parameters such as the maximum detection range & minimum power of the illuminating laser in the same range.The principles of the evaluation system were discussed.In addition,aprototype was designed and tested in an outfield using two sighting telescopes as targets both before and after anti-cat′s-eye detection procedure.The results indicate that when the test distance changes from 500 mto 1 km,the decrease in the minimum illumination power is 1.5%.When the illumination laser power changes from 500 mW to 300 mW,there is an increase in the maximum detection distance of 1.8%.This implies that the proposed evaluation technology are consistent under different experimental conditions,and could be used to objectively and accurately quantify the effectiveness of the anti-cat′s-eye detection technology.It also has the potential to support research in related fields.
引文
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[14]武东生,白廷柱,刘秉琦,等.猫眼效应回波的动态成像探测与目标识别[J].光学学报,2013,33(8):0811003-1-6.WU D SH,BAI T ZH,LIU B Q,et al..Dynamic imaging detection and target recognition for cat-eye effect echo[J].Acta Optica Sinica,2013,33(8):0811003-1-6.(in Chinese)
[2]陆君,王挺峰,李远洋,等.空间激光主动探测离轴三反系统的猫眼效应[J].光学精密工程,2015,23(7):1948-1956.LU J,WANG T F,LI Y Y,et al..Active laser detection of cat′s eye effect for space-based off-axis threemirror optical system[J].Opt.Percision Eng.,2015,23(7):1948-1956.(in Chinese)
[3]赵勋杰,高稚允,张英远.基于“猫眼”效应的激光侦察技术及其在军事上的应用[J].光学技术,2003(4):415-417.ZHAO X J,GAO ZH Y,ZHANG Y Y.Technique of active laser reconnaissance and the application in military[J].Optical Technology,2003(4):415-417.(in Chinese)
[4]雷鹏,孙可,张玉发,等.猫眼回波探测1.06μm激光引发硅的损伤演化[J].红外与激光工程,2016,45(12):1206007-1206007(7).LEI P,SUN K,ZHANG Y F,et al..Cat′s eye echo detecting the damage evolution of silicon induced by1.06μm laser[J].Infrared and Laser Engineering,2016,45(12):1206007-1206007(7).(in Chinese)
[5]雷鹏,孙可,张玉发,等.凝视光电成像系统猫眼回波特性的理论与实验研究[J].光子学报,2016,45(6):614004-0614004.LEI P,SUN K,ZHANG Y F,et al..Cat′s eye echo-wave characteristics of staring photoelectric imaging system[J].Acta Photonica Sinica,2016,45(6):614004-0614004.(in Chinese)
[6]SUN H,GU S,NI G.The design of active laser detection system based on nonlinear optical effect[J].SPIE,2005,6029:060243.
[7]郭旭东,董亭亭,付跃刚,等.圆锥形仿生蛾眼抗反射微纳结构的研制[J].红外与激光工程,2017,46(9):116-122.GUO X D,DONG T T,FU Y G,et al..Development of bionic moth-eye anti-reflective conical micro-nano structure[J].Infrared and Laser Engineering,2017,46(9):116-122.(in Chinese)
[8]董亭亭,张国伟,郭劼,等.仿生蛾眼抗反射结构成像系统研制[J].红外与激光工程,2019,48(1):217-222.DONG T T,ZHANG G W,GUO ZH,et al..Development of imaging system with bionic moth-eye anti-reflection structure[J].Infrared and Laser Engineering,2019,48(1):217-222.(in Chinese)
[9]LECOCQ C,DESHORS G,LADO-BORDOWSKYO,et al..Sight laser detection modeling[J].SPIE,2003,5086:280-286.
[10]赵延仲,孙华燕,宋丰华,等.激光辐照猫眼光学镜头时的反射特性机理研究[J].物理学报,2008,57(4):2284-2294.ZHAO Y ZH,SUN H Y,SONG F H,et al..Reseach on the mechanism of reflection characteristics of laser irradiation on the cat eye optical lens[J].Acta Physica Sinica,2008,57(4):2284-2294.(in Chinese)
[11]SUN H,XIONG F,GU S.Ranging performance of active laser detection[J].SPIE,2006,6344:63442P.
[12]GONG M L,HE S F,GUO R,et al..Cat-eye effect reflected beam profiles of an optical system with sensor array[J].Applied Optics,2016,55(16):4461-4466.
[13]REN X,LI L.Recognizing cat-eye targets with dual criterions of shape and modulation frequency[J].Chinese Optics Letters,2011,9(4):041101.
[14]武东生,白廷柱,刘秉琦,等.猫眼效应回波的动态成像探测与目标识别[J].光学学报,2013,33(8):0811003-1-6.WU D SH,BAI T ZH,LIU B Q,et al..Dynamic imaging detection and target recognition for cat-eye effect echo[J].Acta Optica Sinica,2013,33(8):0811003-1-6.(in Chinese)
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