Finite-difference methods for computational electromagnetics (CEM)
The authors examine the characteristics of the Lax-Wendroff and Crank-Nicolson schemes as applied to the time-domain Maxwell's equations. The numerical results, in terms of the surface current and radar cross section (RCS), are compared for two-dimensional scattering problems. The Lax-Wendroff...
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Sprache: | eng |
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Zusammenfassung: | The authors examine the characteristics of the Lax-Wendroff and Crank-Nicolson schemes as applied to the time-domain Maxwell's equations. The numerical results, in terms of the surface current and radar cross section (RCS), are compared for two-dimensional scattering problems. The Lax-Wendroff and Crank-Nicolson schemes were applied to the first- and second-order Maxwell's equations, respectively. The explicit Lax-Wendroff scheme eliminates the need for staggered meshes associated with the popular Yee (1966) algorithm while the implicit Crank-Nicolson scheme eliminates both the need for staggered meshes and the time-step restriction of the explicit schemes. The accuracy of the results obtained for the two-dimensional test problem is very encouraging, indicating that both schemes are good candidates for solving electromagnetic scattering problems in the time domain.< > |
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DOI: | 10.1109/APS.1992.221534 |