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全文摘要次数: 166 全文下载次数: 259
引用本文:

DOI:

10.11834/jrs.20210178

收稿日期:

2020-05-27

修改日期:

2021-03-29

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基于概率株的三维冠层蒙特卡洛辐射传输模型构建
马红章1, 艾璐1, 刘素美1, 孙根云2, 孙林3,3
1.中国石油大学 理学院;2.中国石油大学 地球科学与技术学院;3.山东科技大学 测绘学院
摘要:

三维辐射传输模型可准确刻画植被冠层的异质性对太阳辐射的散射作用,对利用高分辨率光学影像进行植被定量遥感建模与应用具有重要的指导意义。本文采用具有真实植株抽象统计平均意义的概率株构建三维植被冠层。结合蒙特卡洛光线追踪技术和冠层空隙率计算,通过合理设计光能粒子在冠层内的传输过程,构建了具有统计特征的三维冠层辐射传输模型。以具有典型垄行种植结构的玉米冠层为例,进行了不同生长期玉米冠层BRF特性模拟并与多角度BRF观测数据进行了比对,结果表明本文模型对不同生长期玉米冠层的BRF均有较好的模拟精度。

Construction of three-dimensional canopy radiation Monte Carlo model based on probability plant
Abstract:

The three-dimensional radiation transmission model can accurately describe the interaction between vegetation canopy heterogeneity and solar radiation, and has important guiding significance for vegetation quantitative remote sensing modeling and application by using high-resolution optical images. In this paper, probability plants with statistical significance of actual plants are used to construct a three-dimensional vegetation canopy. Combining Monte Carlo ray tracing technology and canopy porosity calculation, a three-dimensional canopy radiation transmission simulation model with statistical characteristics was constructed by rationally designing the random transmission process of optical particles in the canopy. Taking the corn canopy with typical ridge planting structure as an example, the optical BRF simulation of the corn canopy in different growth periods was carried out and compared with the multi-angle observation data. The comparison results show that the model has a good simulation accuracy for the optical BRF of corn canopy in different growing periods.

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