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为以遥感信息更精确地反演水稻冠层更丰富的结构参数 ,建立水稻多组分双向反射模型 ,本文计算并详细分析了水稻群丛结构特征和太阳辐射在水稻群丛内的辐射传输特性。研究表明 :其叶倾角分布可用双参数椭圆函数模拟 ,影响太阳辐射在水稻群丛内传输的重要特征量 :水稻各组分的投影函数和消光系数通过叶倾角分布函数计算是可行的 ;太阳直接辐射在水稻群丛的透过率可用负二项函数来描述 ,从而为更进一步的研究水稻的双向反射特性奠定了基础
In order to retrieve more abundant structural parameters of rice canopy more accurately by remote sensing information and establish multi-component bidirectional reflectance model of rice, this paper calculated and analyzed the characteristics of rice cluster structure and the radiation transmission characteristics of solar radiation in the paddy rice . The results show that the leaf inclination distribution can be simulated by two-parameter elliptic function, which can affect the transmission of solar radiation in rice cluster. The projection function and extinction coefficient of each component of rice are feasible by calculating the leaf inclination distribution function. The transmissivity of radiation in the paddy rice can be described by a negative binomial function, which lays the foundation for further study of the bi-directional reflectance of rice