Full-Wave Scattering Computation for Snowpacks Using SSWAP-SD Method with the Discrete-Dipole Approximation

摘要

A computationally efficient and coherent electromagnetic scattering solution for a snow layer with an arbitrary thickness is considered in this paper. Several realizations of a thin snow slab are solved numerically using the Method of Moments (MoM) with the application of the Discrete Dipole Approximation (DDA) to form the statistics of the scattering matrix representing such a thin snow layer. For an arbitrarily thick snow layer, the whole layer is divided into thin slabs and each individual slab is represented with a corresponding S-matrix using a pseudo random generator and these S-matrices are cascaded using the Statistical S-Matrix Wave Propagation in Spectral Domain (SSWaP-SD) method to calculate the total forward and backward bistatic scattered fields in a fully coherent way.