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基于多角度偏振相机的城市地物偏振特性初步研究

, PP. 52-59

Keywords: DPC,BPDF,气溶胶,POLDER,NDVI,MICROPOL

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Abstract:

?基于高空间分辨率多角度偏振相机(DirectionalPolarimetricCamera,DPC)获取的典型地表上空多角度偏振航空数据,反演得到了中国珠三角地区典型城市地物的偏振双向反射(Bidirectionalpolarizationdistributionfunctions,BPDF)模型.通过与MICROPOL和POLDER测量数据反演的偏振反射率模型进行比较,验证了DPC反演地表偏振反射率数据的有效性.在此基础上,重点分析了典型城市地物高空间分辨率的BPDF特性.结果表明,城市地区不同地物的偏振反射率存在明显差别,偏振反射率与NDVI成反比关系,但整体趋势都随着散射角的变大而变小.城市地区典型地物类型偏振反射率的研究,为基于多角度偏振遥感数据探测地面类型的物理特性提供理论支持.

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