Inversion of the dielectric constant from the copolarized ratio and the co-polarized discrimination ratio of the scattering coefficient

Based on the co-polarized ratio and the co-polarized discrimination ratio of the back scattering coefficient, the inversion of the dielectric constant is discussed in this paper. The value of the co-polarized ratio and the co-polarized discrimination ratio are calculated for minimum effect of surface roughness for the retrieval of the dielectric constant. The ratio of the co-polarized and co-polarized discrimination of the SSA method extends the scope of the application of the ratio method. Combined with the minimum squares techniques and the GA method, two different ratios of the backscattering coefficients were proposed to retrieve the dielectric constant. The retrieved results of the real parts and the imaginary parts are in good agreement with the original results, which proves the validity of the theory primely. What is most significative is that it shows an alternative method of great help for us to retrieve the surface dielectric constant in a wide range by the ratio of the SSA method.