Estimation of Ground Scattering Coefficient Based on Small Perturbation Method

This paper introduces a method to evaluate the electromagnetic (EM) scattering of the land surface. A detail of small perturbation method (SPM) is firstly presented, which is adopted to evaluate the EM scattering of the mentioned rough surface with large incident angles. We then obtain the scattering coefficient of sandy-loam soil in different polarizations. Then we give a minute analysis to the results of scattering coefficient. At last, we analyze its current condition and problems in SPM.