海洋气溶胶红外偏振散射特性及校正研究
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摘要
红外偏振系统探测远距离海面目标时,海洋气溶胶的散射使得成像质量退化严重,由于散射作用导致目标与背景难以区分。本文针对气溶胶散射对红外偏振光退偏特性问题,以气溶胶Mie散射模型为基础,推导得到散射退偏模型。然后,根据不同气溶胶的粒子谱分布,在对大气透过率和红外偏振系统同时校正的基础上,建立散射退偏校正模型,研究了气溶胶散射对不同尺度因子,不同散射角和不同散射光矢量的影响。根据对实验图像分析,在经过本文所提出的经散射校正和红外偏振系统校正后图像的质量有了明显提高,该方法能够较好的校正大气气溶胶散射对红外偏振光所带来的影响,更准确反映出目标与背景的偏振特性,对于红外偏振目标检测与识别具有重要意义。
When the infrared polarization system detects a sea marine target through a long distance,the scattering of the ocean aerosol deteriorates the imaging quality seriously,and the scattering of the depolarization causes the target and the background to be indistinguishable.In this paper,based on the aerosol Mie scattering model,the scattering depolarization model is deduced.Then,according to the particle distribution of different aerosols,a correction model of scattering depolarization is established on the foundation of the simultaneous correction of the atmospheric transmittance and the infrared polarization system.Aerosol scattering is studied on the influence of different scale factors,different scattering angles,and different scattering light vector.According to the experimental images,the quality of the images obtained after correcting by the scattering correction and the infrared polarization system proposed in this paper has been significantly improved.The method can better correct the influence of atmospheric aerosol scattering on infrared polarized light,and more accurately reflect the polarization characteristics of the target and the background.Therefore,infrared polarization scattering correction is of great significance for target detection and recognition.
When the infrared polarization system detects a sea marine target through a long distance,the scattering of the ocean aerosol deteriorates the imaging quality seriously,and the scattering of the depolarization causes the target and the background to be indistinguishable.In this paper,based on the aerosol Mie scattering model,the scattering depolarization model is deduced.Then,according to the particle distribution of different aerosols,a correction model of scattering depolarization is established on the foundation of the simultaneous correction of the atmospheric transmittance and the infrared polarization system.Aerosol scattering is studied on the influence of different scale factors,different scattering angles,and different scattering light vector.According to the experimental images,the quality of the images obtained after correcting by the scattering correction and the infrared polarization system proposed in this paper has been significantly improved.The method can better correct the influence of atmospheric aerosol scattering on infrared polarized light,and more accurately reflect the polarization characteristics of the target and the background.Therefore,infrared polarization scattering correction is of great significance for target detection and recognition.
引文
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[12] ZHANG Qianqian,GAO Jun,XU Xiaohong,et al.Analysis of multiple scattering polarization transmission properties[J].Chinses Journal of Lasers,2012,39(12):190-197.(in Chinese)张倩倩,高隽,徐小红,等.多粒子散射的偏振传输特性分析[J].中国激光,2012,39(12):190-197.
[13] RAO Ruizhong.Modern atmospheric optics[M].Beijing:Science Press,2012:219-241.(in Chinese)饶瑞中.现代大气光学[M].北京:科学出版社,2012:219-241.
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[15] Michael I Mishchenko,Larry D Travis,Andrew A Lacis.Scattering,absorption,and emission of light by small particles[M].Beijing:National Defense Industry Press,2013.(in Chinese)Michael I Mishchenko,Larry D Travis,Andrew A Lacis.微粒的光散射、吸收和发射[M].北京:国防工业出版社,2013.
[16] Deirmendjian D.Electromagnetic scattering on spherical polydispersions[R].Rand Corp Santa Monica CA,1969.
[17] Li S,Jin W,Xia R,et al.Radiation correction method for infrared polarization imaging system with front-mounted polarizer[J].Optics Express,2016,24(23):26414-26430.
[2] ZHANG Chaoyang,CHENG Haifeng,CHEN Zaohui,et al.Polarimetric imaging of camouflage screen in visible and infrared wave band [J].Infrared and Laser Engineering,2009,38(3):424-427.(in Chinese)张朝阳,程海峰,陈朝辉,等.伪装遮障的光学与红外偏振成像[J].红外与激光工程,2009,38(3):424-427.
[3] Tyo J S,Goldstein D L,Chenault D B,et al.Review of passive imaging polarimetry for remote sensing applications[J].Applied Optics,2006,45(22):5453-5469.
[4] CHEN Xingfeng,GU Xingfa,CHENG Tianhai,et al.Simulation and analysis of polarization characteristics for real sea surface sunglint[J].Spectroscopy and Spectral Analysis,2011,31(6):1648-1653.(in Chinese)陈兴峰,顾行发,程天海,等.真实海洋表面的太阳耀光偏振辐射特性仿真与分析[J].光谱学与光谱分析,2011,31(6):1648-1653.
[5] Lambrinos D,M?ller R,Labhart T,et al.A mobile robot employing insect strategies for navigation[J].Robotics and Autonomous systems,2000,30(1):39-64.
[6] Fang Shuai,Xia Xiushan,Huo Xing,et al.Image dehazing using polarization effects of objects and airlight[J].Optics express,2014,22(16):19523-19537.
[7] ZHAO Taifei,WANG Chan,KE Xizheng.The study of UV scattering polarization properties of spherical particles of haze[J].Spectroscopy and Spectral Analysis,2017,37(3):665-671.(in Chinese)赵太飞,王婵,柯熙政.球形雾霾粒子的紫外光散射偏振特性研究[J].光谱学与光谱分析,2017,37(3):665-671.
[8] LIANG Jian,REN Liyong,JU Haijuan,et al.Visibility enhancement of hazy images based on a universal polarimetric imaging method[J].Journal of Applied Physics,2014,116(17):173107.
[9] YANG Jie,WANG Jiejun,WANG Feng,et al.Error mechanism and calibration of infrared polarization detection in atmospheric transmission[J].Acta Optica Sinica,2016,36(10):252-260.(in Chinese)杨杰,汪杰君,王峰,等.大气传输中红外偏振探测误差机理及校正[J].光学学报,2016,36(10):252-260.
[10] ZOU Xiaofeng,WANG Xia,JIN Weiqi,et al.Atmospheric effects on infrared polarization imaging system[J].Infrared and Laser Engineering,2012,41(2):304-308.(in Chinese)邹晓风,王霞,金伟其,等.大气对红外偏振成像系统的影响[J].红外与激光工程,2012,41(2):304-308.
[11] He Si,Wang Xia,Xia Runqiu,et al.Polarimetric infrared imaging simulation of a synthetic sea surface with Mie scattering[J].Applied Optics,2018,57(7):B150-B159.
[12] ZHANG Qianqian,GAO Jun,XU Xiaohong,et al.Analysis of multiple scattering polarization transmission properties[J].Chinses Journal of Lasers,2012,39(12):190-197.(in Chinese)张倩倩,高隽,徐小红,等.多粒子散射的偏振传输特性分析[J].中国激光,2012,39(12):190-197.
[13] RAO Ruizhong.Modern atmospheric optics[M].Beijing:Science Press,2012:219-241.(in Chinese)饶瑞中.现代大气光学[M].北京:科学出版社,2012:219-241.
[14] GU Xingfa,CHENG Tianhai,LI Zhengqiang,et al.Atmospheric aerosol polarized remote sensing[M].Beijing:Higher Education Press,2015:26-42.(in Chinese)顾行发,程天海,李正强,等.大气气溶胶遥感[M].北京:高等教育出版社,2015:26-42.
[15] Michael I Mishchenko,Larry D Travis,Andrew A Lacis.Scattering,absorption,and emission of light by small particles[M].Beijing:National Defense Industry Press,2013.(in Chinese)Michael I Mishchenko,Larry D Travis,Andrew A Lacis.微粒的光散射、吸收和发射[M].北京:国防工业出版社,2013.
[16] Deirmendjian D.Electromagnetic scattering on spherical polydispersions[R].Rand Corp Santa Monica CA,1969.
[17] Li S,Jin W,Xia R,et al.Radiation correction method for infrared polarization imaging system with front-mounted polarizer[J].Optics Express,2016,24(23):26414-26430.
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