Roughness of soil surface performs a remarkable inference to bi directional reflectance function of ground

and it is a variable.So it’s one of the important factor that affect the precision of the remote sensing for soil water content.Though analyzing the physical course of soil surface reflecting under the inference of soil water

this paper demonstrated that the relationship between soil reflected spectrum and the soil water content obeys the Beer Law

and that the essential cause of soil sruface roughness affecting the soil reflectance is the slant of sub slops on clod surface which result in the increasing of the raer of multi reflecting light.Basing on it

a remote sensing mode for soil water remote sensing on rough surface is proposde in this paper.The result of experimental data showed that the model has a satisfied precision.