Electromagnetic scattering from the one-dimensional fractal rough sea surface under the Gaussian-beam incidence is studied by using the beam simulation method.Compared with the traditional Method of Moment
the difficulty in numerical calculating is avoided for the limitation of the memory of the computer
the validity of the beam simulation method applied to deal with the scattering from the rough surface is analyzed
the dependence of the accuracy of the numerical results on the number of the sub-beam
the polarization characteristics and the fractal dimension is discussed in detail.