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首页> 外文会议>Conference on remote sensing for environmental monitoring, GIS applications, and geology >Towards new methodology for improvement of topographic and anisotropic correction of desert bare soil
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Towards new methodology for improvement of topographic and anisotropic correction of desert bare soil

机译：朝着改进沙漠裸土的地形和各向异性校正的新方法

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摘要

Desert bare soil has been found in literature to exhibit anisotropic reflectance behaviour. Anisotropy is described byBidirectional Reflectance Distribution function (BRDF). Literature studies have limited their investigations to thebehaviour of the topographic corrections of Minnaert and C models (simple forms of the empirical type of BRDF) withterrain variables (slope and orientation). Yet, none of these studies, especially for desert bare soil, has investigated thebehaviour of the coefficient values of Minnaert and C with terrain variables. The investigation in this study has revealedthat the relation between terrain slope (derived from both DEM level-1 and level-2) of desert bare soil in Saudi Arabiaand K and C values follow closely a 2nd order polynomial trend. K curves have taken convex shapes, whereas C curveswere concave. The Minnaert (K) and C coefficients trends have shown that surface Lambertian behaviour is morepronounced on slopes facing away from the sun than on sun facing slopes. This author's newly developed terrain slope,aspect and phase angle dependant's C and Minnaert coefficients produced promising results compared to the global Kand C.
机译：在文献中发现了沙漠裸土，表现出各向异性反射行为。禁止各向异性描述了百分点反射率分布函数（BRDF）。文学研究限制了对Minnaert和C型号的地形校正（简单形式的BRDF的简单形式）的调查有限公司的调查（BRDF的实证类型的简单形式）.PERTERRAIN变量（斜坡和方向）。然而，这些研究尤其是沙漠裸露的土壤，研究了Minnaert和C的系数值与地形变量的影响。该研究的调查揭示了沙特阿拉伯沙特阿拉伯和C值的地形坡度（来自DEM等级-1和第2级）之间的关系，而C值紧密遵循第二阶多项式趋势。 k曲线已经拍摄了凸形，而c curveswere凹。 Minnaert（k）和C系数趋势表明，表面兰伯特行为在远离太阳的斜坡上比面对斜坡的斜坡更加特许。该作者的新开发的地形斜坡，方面和相位角依赖的C和Minnaert系数产生了与全球Kand C相比的有希望的结果。

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