叶的光学特性谱PROSPECT模型

叶的光学特性谱PROSPECT模型

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Initial contribute: 2018-12-04

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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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叶的光学特性谱PROSPECT模型

   1PROSPECT模型:

对给定波长,反射系数ρα和透射系数τα的一般公式为:

式中,α是最大入射角;n是折射指数;θ是盘的传输系数;tav(α,n)是介电质平面对所有入射方向及偏振方向取平均的透射率。

N层介质的总的反射系数和透射系数可表示为:

(2)叶物质的光学常数的确定模型:

折射指数n可通过解下面的方程来得到:

式中,对均匀介质层应用了盘模型,反射系数ρe=R1,α;透射系数τe=T1,α

盘模型给出了一个传输系数θ,其通过下面的方程与吸收系数k联系起来:

谱吸收系数k(λ)可表示为:

         

式中,λ是波长;Ki(λ)是与叶成分i相应的特定的谱吸收系数;Ci是单位叶面积成分i的含量;ke(λ)可取(ρe-ρ592+(τe-τ592的最小值得到。
参考文献

   Jacquemoud S,BaretF:叶的光学特性谱PROSPECT模型。Remote Sensing of Environment199034

 

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《资源环境数学模型手册》 (2018). 叶的光学特性谱PROSPECT模型, Model Item, OpenGMS, https://geomodeling.njnu.edu.cn/modelItem/3c0306fd-fc32-4939-854b-17534f87e62e
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wu kai
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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
wu kai
Last modify time
2020-11-16
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