Abstract
This paper extends the utility of the finite-difference transmission-line-matrix (FD-TLM) method for solving open region scattering problems in remote sensing applications, by developing and evaluating second-order absorbing boundary conditions (ABCs) for the method. The ABCs for the edges and corners are obtained by associating sets of approximate PDEs corresponding to the boundaries. The finite-difference time-domain expressions for the ABCs are derived by using a two-level discretization scheme which is proved to be stable. It can be seen from the plots obtained that the implemented second-order absorbing boundaries are perfectly transparent to the waves impinging on them at incidence angles of 0-45°. Also, the normal incidence reflection coefficient is less than -35 dB for time step n up to 54, at which the global error is less than 10 -5 .
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1136-1139 |
| Number of pages | 4 |
| Journal | IEEE Antennas and Propagation Society, AP-S International Symposium (Digest) |
| Volume | 2 |
| State | Published - Dec 1 1994 |
| Event | Proceedings of the IEEE Antennas and Propagation International Symposium. Part 3 (of 3) - Seattle, WA, USA Duration: Jun 19 1994 → Jun 24 1994 |
All Science Journal Classification (ASJC) codes
- Electrical and Electronic Engineering