An FDTD near- to far-zone transformation for scatterers buried in stratified grounds Export

@article{citeulike:3790387, abstract = {The finite-difference time-domain (EDTD) technique is being used with increasing frequency for modeling the scattering characteristics of buried objects. The FDTD has, for some time, been able to model the near-zone scattered fields of buried objects due to near-zone sources. This is adequate for modeling the scattered returns of ground-based ground-penetrating radar, but not for airborne radar. This paper describes an FDTD-compatible technique whereby far-zone scattered fields of objects buried in a stratified ground can be calculated. This technique uses the equivalence principle to model a buried object in terms of equivalent electric and magnetic currents. The fields radiated by these currents in the presence of a stratified ground are then calculated using the reciprocity theorem and the well-known field equations for plane waves in a stratified media. Numerical results are presented that show excellent agreement between this technique and both analytical and numerical results}, author = {Demarest, K. and Huang, Z. and Plumb, R.}, booktitle = {Antennas and Propagation, IEEE Transactions on}, citeulike-article-id = {3790387}, citeulike-linkout-0 = {http://dx.doi.org/10.1109/8.511824}, citeulike-linkout-1 = {http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=511824}, doi = {10.1109/8.511824}, journal = {Antennas and Propagation, IEEE Transactions on}, keywords = {fdtd, nfff}, number = {8}, pages = {1150--1157}, posted-at = {2008-12-15 23:12:36}, priority = {2}, title = {An FDTD near- to far-zone transformation for scatterers buried in stratified grounds}, url = {http://dx.doi.org/10.1109/8.511824}, volume = {44}, year = {1996} }

TY - JOUR ID - citeulike:3790387 L3 - citeulike-article-id:3790387 N2 - The finite-difference time-domain (EDTD) technique is being used with increasing frequency for modeling the scattering characteristics of buried objects. The FDTD has, for some time, been able to model the near-zone scattered fields of buried objects due to near-zone sources. This is adequate for modeling the scattered returns of ground-based ground-penetrating radar, but not for airborne radar. This paper describes an FDTD-compatible technique whereby far-zone scattered fields of objects buried in a stratified ground can be calculated. This technique uses the equivalence principle to model a buried object in terms of equivalent electric and magnetic currents. The fields radiated by these currents in the presence of a stratified ground are then calculated using the reciprocity theorem and the well-known field equations for plane waves in a stratified media. Numerical results are presented that show excellent agreement between this technique and both analytical and numerical results IS - 8 JF - Antennas and Propagation, IEEE Transactions on EP - 1157 TI - An FDTD near- to far-zone transformation for scatterers buried in stratified grounds VL - 44 T2 - Antennas and Propagation, IEEE Transactions on SP - 1150 KW - fdtd KW - nfff AU - Demarest, K AU - Huang, Z AU - Plumb, R PY - 1996/// UR - http://dx.doi.org/10.1109/8.511824 ER -