The variation of the surface backscattering of ice ridges for frequency 5-3 GHz is examined with a three-dimensional geometrical model for ice ridges and small scale perturbation theory. Multiple reflections are not included. The most important ridge properties for low salinity ice studied during the BEPERS experiment are the small scale surface roughness, the dielectric constant and the detailed ridge geometry parameters (like ice block orientations, etc.) in that order. The incidence angle distribution of an ice ridge is also affected by the minor facets of the ice blocks, For BEPERS ridges and radar parameters the contribution of single specular reflections to the backscattered intensity is not large.