Multilevel plane wave time domain–based global boundary kernels for two-dimensional finite difference time domain simulations
Article first published online: 14 AUG 2004
Copyright 2004 by the American Geophysical Union.
Volume 39, Issue 4, August 2004
How to Cite
2004), Multilevel plane wave time domain–based global boundary kernels for two-dimensional finite difference time domain simulations, Radio Sci., 39, RS4007, doi:10.1029/2003RS002928., , , , and (
- Issue published online: 14 AUG 2004
- Article first published online: 14 AUG 2004
- Manuscript Accepted: 1 JUN 2004
- Manuscript Revised: 3 FEB 2004
- Manuscript Received: 27 JUN 2003
- two-dimensional finite difference time domain;
- global transparent boundary conditions;
- plane-wave-time-domain algorithm
 Time domain boundary integrals are used to impose global transparent boundary conditions in two-dimensional finite difference time domain solvers. Augmenting classical methods for imposing these conditions with the multilevel plane wave time domain scheme reduces the computational cost of enforcing a global transparent boundary condition from O() to O(st log s log t); here s and t denote the number of equivalent source boundary nodes and their time samples used to integrate external fields, respectively. Numerical results demonstrate that for thin and concave material objects, plane wave time domain-accelerated global transparent boundary kernels outperform perfectly matched layer-based absorbing boundary schemes without loss of accuracy.