水面溢油是最常见的水体污染源之一,在反射、散射和透射电磁辐射的过程中,将表现与它们自身性质有关的偏振特性。因此,对水面溢油的多角度偏振信息探测成为水体定量遥感的一种新手段。偏振反射是伴随目标的二向性反射而产生的,在探测目标地物的二向性反射的同时,可以通过起偏器获得目标地物偏振态的三维空间分布。本文从多角度偏振遥感机理的角度出发,研究了水面溢油的多角度偏振反射与二向性反射之间存在的定量关系,并从实验上验证了其二向性反射、45°偏振、偏振均值三者在2π空间的相应方位角、天顶角、探测角以及通道上的反射比均相等。

Water-surfaceOilSpill is one of themostpopular pollution ofwater, In the process of reflecting,\nscattering and transmiting electromagneticwave, itcan produce polarized characteristicswhich are related to the\nnature themselves; therefore, detectingWater-surfaceOilSpill’multi-angle polarization information becomes a\nnewmethod ofquantitative remote sensing. Forpolarized reflectance always goeswith bidirectional reflectance,\nwe can attain the polarized three-dmi ensional spatial distribution of the targets by a polarmi eterwhen detecting\nits bidirectional reflectance. From the point of view ofmulti-angle polarized remote sensingmechanism, this\npaper studied the quantitative relation between polarized BRDF and BRDF ofWater-surfaceOilSpil,l and from\nthe expermi entations testified its equality of the reflectance ofbidirectional reflect, polarized reflectof45 degree\nand polarized reflect ofmean value in the corresponding azmi uth angle, zenith angle, detection angle and\ndetection channels in 2πspace.