从背景反射率计算和真实反射率获取两个方面,以Landsat-5 TM影像、ASTER影像以及与两幅影像分别对应的沙地、草地同步实测光谱数据作为数据源,对基于三维辐射传输模型SHDOM经验方程的垂直观测光学遥感影像邻近效应校正方法和基于与影像同步实测光谱数据的遥感影像邻近效应校正方法进行了对比研究。结果表明,从辐射传输机理上,基于SHDOM经验方程的邻近效应校正算法的理论基础更为完善;而从校正后影像的目视效果上,基于同步实测光谱数据的邻近效应校正算法则更为有效。 Based on the background reflectance calculation and the real reflectance acquisition, Landsat-5 TM image, ASTER image and sand and grass synchronous measured spectral data corresponding to the two images are respectively used as data sources. The three-dimensional radiative transfer model SHDOM Empirical equation of vertical observation optical remote sensing image proximity effect correction method and based on the image synchronization with the measured spectral data remote sensing image proximity effect correction method were compared. The results show that the theoretical basis of the proximity effect correction algorithm based on the SHDOM empirical equation is more perfect from the radiation transmission mechanism. However, from the visual effect of the corrected image, the proximity effect correction algorithm based on the synchronized measured spectral data is more effective .