@classmethod
def HomogeneousMODISBRDF(cls, par1, par2, par3):
    """Parameterisation for a surface BRDF based on the MODIS Operational BRDF model.

        The parameters are:

        - Weight for lambertian kernel
        - Weight for Ross Thick kernel
        - Weight for Li Spare kernel

        """
    return (
        '0 Homogeneous surface\n1 (directional effects)\n10 (MODIS BRDF model)\n%f %f %f\n'
         % (par1, par2, par3))
