对卫星遥感大气订正6S模型中的算法的探讨

对6S模型中的算法进行了探讨，并提出了不同的看法：a．6S模型中将向上辐射强度分解为5个组分是没有必要的，事实上其中有些组分很难计算，其计算结果也不够精确，同时这5个组分之和也并不严格等于总辐射强度；b．6S模型对邻近效应的计算也存在着较大误差；c．一维地-气耦合辐射的数值计算只是一个很简单的问题，宜首选国际辐射传热界发展的离散坐标法来求解；d．宜选用逆向蒙特卡罗法来分析邻近效应．另外，对最近提出的多步法做了进一步扩展，以使其能计算更多的向上辐射强度组分．最后，提出了一种更便于大气订正的向上辐射强度划分方法．

Discussion of the algorithm for the atmospheric correction of satellite remote sensing in the 6S model

After the 6S model was discussed,some opinions were presented:(1) In consideration of difficult calculation of some components,inaccurate calculation results and the sum of five components being not strictly equivalent to the total radiation intensity,it is unnecessary to divide the upward radiation intensity into five components in the 6S model.(2) There is a relatively marked error in the computation by 6S model for the adjacency effect.(3) The computation of 1-D ground-atmosphere coupled radiation is a simple question,it would be better to choose discrete ordinates method developed by the international radiation heat transfer circle to solve it.(4) It would be better to use the backward Monte Carlo method to calculate the adjacency effect.The developed multi-steps method was further expanded to calculate more upward radioactive components.A method for dividing the upward radiation intensity was proposed,by which the atmospheric correction was done conveniently.