Finite-difference algorithms for the time-domain Maxwell's equations - A numerical approach to RCS analysisThe applications of two CFD-based finite-difference methods to computational electromagnetics are investigated. In the first method, the time-domain Maxwell's equations are solved using the explicit Lax-Wendroff scheme and in the second method, the second-order wave equations satisfying the Maxwell's equations are solved using the implicit Crank-Nicolson scheme. The governing equations are transformed to a generalized curvilinear coordinate system and solved on a body-conforming mesh using the scattered-field formulation. The induced surface current and the bistatic radar cross section are computed and the results are validated for several two-dimensional test cases involving perfectly-conducting scatterers submerged in transverse-magnetic plane waves.
Document ID
19920064375
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Vinh, Hoang (NASA Ames Research Center Moffett Field, CA, United States)
Dwyer, Harry A. (NASA Ames Research Center Moffett Field, CA, United States)
Van Dam, C. P. (California, University Davis, United States)