Title :
DGTD for a Class of Low-Observable Targets: A Comparison With MoM and (2, 2) FDTD
Author :
Alvarez, J. ; Alonso-Rodriguez, J.M. ; Carbajosa-Cobaleda, H. ; Cabello, Miguel R. ; Angulo, Luis D. ; Gomez Martin, R. ; Garcia, S.G.
Author_Institution :
EADS-CASA, Getafe, Spain
Abstract :
The simulation of low-observable targets requires high accuracy, both in the geometrical discretization as well as in the numerical solution of the electromagnetic problem. In this letter, we employ the well-known NASA almond to illustrate the accuracy of the leapfrog discontinuous Galerkin method, combined with a local time-stepping algorithm, comparing it to the method of moments (MoM) and the (2, 2) finite-difference time-domain (FDTD) methods.
Keywords :
Galerkin method; electromagnetic wave scattering; finite difference time-domain analysis; geometry; method of moments; DGTD; FDTD methods; MoM methods; NASA almond; discontinuous Galerkin time-domain methods; electromagnetic scattering; finite-difference time-domain methods; geometrical discretization; leapfrog discontinuous Galerkin method; local time-stepping algorithm; low-observable targets; method of moments methods; numerical solution; Accuracy; Finite difference methods; Mathematical model; Method of moments; NASA; Time-domain analysis; Discontinuous Galerkin; RADAR cross section; time-domain analysis;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2014.2300699
