森林反射模型

森林反射模型

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Initial contribute: 2018-12-04

Authorship

:  
岳天祥编著
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yue@lreis.ac.cn
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Method-focused categoriesData-perspectiveRemote sensing analysis

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森林反射模型

此处应用的森林反射模型是几何光学的二向反射模型,在给定波段上沙地的反射系数给为:

式中,是阳光照射的地面的信号;是荫蔽地面的信号;是阳光照射树冠的信号;是荫蔽树冠的信号;g是像元中能观察到的被阳光照射背景的比例;是能观察到的荫蔽背景的比例;v是能观察到的阳光照射树冠表面投射到背景上的比例;s是能观察到的荫蔽树冠表面投射到背景上的比例。

式中,f是树冠间互遮蔽的概率;是投影到视方向上阳光照射树冠的面积;是在背景上单个椭圆体的视阴影的面积;是在视方向或照射方向上背景被单个椭圆体遮蔽的面积;是一个树冠表面单元当在视方向上被互遮蔽时朝着太阳的条件概率;是在视方向上互遮蔽的概率;M是互遮蔽比例。

当视顶角大于照射顶角时,方程成立,否则,所替代,这里是一个树冠表面单元当在照射方向上被互遮蔽时朝着观测仪器的条件概率,是在照射方向上互遮蔽的概率;是在01

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《资源环境数学模型手册》 (2018). 森林反射模型, Model Item, OpenGMS, https://geomodeling.njnu.edu.cn/modelItem/e105d8e6-0982-4448-8a33-dee3003b7493
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zhangshuo
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2020-11-11
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Contributor(s)

Initial contribute : 2018-12-04

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Authorship

:  
岳天祥编著
:  
yue@lreis.ac.cn
:  
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Last modifier
zhangshuo
Last modify time
2020-11-11
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