Title :
A new approximation to three-dimensional electromagnetic scattering
Author :
Song, Lin-Ping ; Liu, Qing Huo
Author_Institution :
Dept. of Electr. & Comput. Eng., Duke Univ., Durham, NC, USA
fDate :
4/1/2005 12:00:00 AM
Abstract :
We introduce a new source-dependent but diagonal scattering tensor to approximate the electromagnetic fields internal to a scatterer. The approximate analytical expressions for the three diagonal scattering components are derived. Numerical tests show that the new approximation has favorable accuracy and wider range of applicability than the existing approximations such as the widely used extended Born approximation and the quasi-analytical approximation.
Keywords :
Fourier transforms; electromagnetic wave scattering; geophysical techniques; integral equations; remote sensing; tensors; 3D electromagnetic scattering; diagonal scattering tensor; diagonal tensor approximation; extended Born approximation; fast Fourier transform; integral equation; quasianalytical approximation; remote sensing; Approximation methods; Electromagnetic fields; Electromagnetic scattering; Fast Fourier transforms; Integral equations; Inverse problems; Magnetic analysis; Permittivity; Tensile stress; Testing; Diagonal tensor approximation (DTA); fast Fourier transform (FFT); integral equation;
Journal_Title :
Geoscience and Remote Sensing Letters, IEEE
DOI :
10.1109/LGRS.2005.846836
