A radiation line strength database, HITRAN, is used to calculate the standard absorption cross-section.

利用HITRAN数据库中的辐射线强等参数建立了用于浓度反演的标准吸收截面。

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The relationship between Bidirectional Reflectance Distribution Function (BRDF) and Laser Rader Cross Section (LRCS) is introduced by means of the electromagnetic radiation and scattering theories.

根据粗糙面电磁散射理论讨论了粗糙表面双向反射分布函数（BRDF）和单位面积激光雷达截面的关系。

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