基于大气辐射传输模型的地物偏振反射率反演方法
投稿时间:2018-01-03  修订日期:2018-05-23  点此下载全文
引用本文:赵慧洁,邢健,贾国瑞.基于大气辐射传输模型的地物偏振反射率反演方法[J].红外与毫米波学报,2018,37(4):416~420].ZHAO Hui-Jie,XING Jian,JIA Guo-Rui.Polarization reflectance retrieval method based on atmospheric radiative transfer model[J].J.Infrared Millim.Waves,2018,37(4):416~420.]
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作者单位E-mail
赵慧洁 北京航空航天大学 仪器科学与光电工程学院 hjzhao@buaa.edu.cn 
邢健 北京航空航天大学  
贾国瑞 北京航空航天大学 248jgr@163.com 
中文摘要:提出一种基于大气矢量辐射传输模型的地物偏振反射率反演方法.利用辐射传输模型, 建立地表反射率、观测条件与传感器入瞳处辐亮度偏振态的查找表, 再进行查找表反查及数值计算, 完成偏振反射率反演.验证实验表明, 典型地面目标物的偏振反射率反演精度可达到90%.
中文关键词:偏振反射率  反演  大气矢量辐射传输模型
 
Polarization reflectance retrieval method based on atmospheric radiative transfer model
Abstract:Current polarization detection is mainly based on the polarization state of at-sensor radiance, w hich can enhance objects of interest or restrain background disturbance qualitatively. There is only empirical linear method for polarized reflectance retrieval of ground objects, w hich is inadequate in terms of adaptability and real-time capability under varied observation conditions. A polarized reflectance retrieval method based on polarized atmospheric radiative transfer model is hereby proposed. A lookup table ( LUT) is established by using the radiative transfer model to illustrate the relationship among polarized reflectance, observation condition and at-sensor polarization state. Polarized reflectance can then be retrieved using the LUT combined w ith numerical calculation. Results show that the retrieval accuracy of polarized reflectance of typical ground objects can be up to 90%.
keywords:polarized reflectance, retrieval  atmospheric polarized radiative transfer model
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