摘要
圆偏振光有良好的"偏振记忆"效应,为了验证在强散射介质中通过圆偏振光的旋性差异可以有效抑制散射光的影响,实现复杂背景下的目标探测功能。从经典的米氏散射理论和菲涅尔反射理论出发,结合偏振蒙特卡罗方法,构建了主动式圆偏振光在散射介质中探测目标的模型,通过追踪每个光子的偏振态变化,统计分析了圆偏振光经过介质散射和目标反射后的Stokes矢量信息。仿真结果表明,文中建模方法可以明显区分出散射介质中是否存在被探测目标;不同的介质环境和不同的探测距离都会对目标的偏振成像造成不同程度的衰减,而圆偏振差分成像及圆偏振度成像均可实现偏振成像的增强处理。文中建模方法可以为全偏振探测的理论研究及实际应用提供借鉴。
Circularly polarized light has a good"Polarization Memory"effect,To verify the influence of scattered light can be effectively suppressed by the difference of helicity of circularly polarized light in strong scattering media,and circularly polarized light can realize target detection under complex background.In this paper,based on the classical Mie scattering theory and Fresnel reflection theory,combined with the polarized Monte Carlo method,a model of active circularly polarized light detecting targets in the scattered medium is constructed.The Stokes vector information of the circular polarized light after scattering by the medium and reflected by the target is analyzed statistically by tracing the polarization state change of each photon.The simulation results show that the proposed method can clearly distinguish the existence of detected targets in the scattering media.Different media environment and different detection distance will cause different degrees of attenuation to the polarization imaging of the target,and both circular polarization differential imaging and degree of circular polarization imaging can realize enhanced polarization imaging.The modeling method in this paper can provide reference for theoretical research and practical application of full polarization detection.
作者
魏莉
于洋
王荣华
WEI Li;YU Yang;WANG Ronghua(College of Information and Architectural Engineering,Anhui Open University,Hefei,Anhui 230022,China;System Development Department,Huishang Bank Headquarters,Hefei,Anhui 230001,China)
出处
《光电子．激光》
CAS
CSCD
北大核心
2021年第6期659-665,共7页
Journal of Optoelectronics·Laser
基金
安徽高校自然科学研究重点项目(KJ2019A0970)
安徽广播电视大学科研项目(QN201916)资助项目。
关键词
圆偏振光
大气散射
目标反射
circular polarization
atmospheric scattering
object reflection
