In this study

the estimation of the Bidirectional Reflectance Distribution Functions （BRDFs） for selected land cover types was made by using the airborne POLDER image data. The main results in this study can be summarized as follows:（1） We presented an specially improved atmospheric correction algorithm

applicable to a framed image data by the POLDER sensor. The terrestrial images measured successively by the airborne POLDER with a different viewing angle were converted to a series of surface albedo images by our atmospheric correction method

in which the multiple scattering were taken into account for.（2） Then

the spectral BRDFs for selected 21target areas

including the cover types of River

Pond

City

Road

Forest were estimated from using successive albedo images. It was found that the BRDF for water surfaces follow a Lambertian law at both 550nm

650nm and at 850nm. It was also found that the BRDFs for vegetated surfaces are more or less isotropic at 550nm and 650nm

but they are anisotropic at 850nm. The fitting parameters of the empirical BRDF law for all of target surfaces were presented.