Abstract
In this paper, radar cross-section (RCS) analysis and antenna simulations based on time-domain calculations are given. A compact, three-dimensional finite-difference time-domain (FDTD) algorithm in cartesian coordinates is built together with time-domain near-to-far field (NTFF) transformation. Both versions, scattered field (FDTD-S) and total field (FDTD-T) are coded which are suitable for RCS calculationsand antenna simulations, respectively. For RCS calculations, the object under investigation is located within the FDTD volume, illuminated by a broad band pulsed plane wave and scattered fields are simulated all around the object via FDTD directly in time-domain. Similar simulation is performed for the antenna analysis and total fields radiated by the antenna under investigation for a pulsed voltage exication are generated. Using NTFF routine, far field responses are obtained for both scattered and total field cases. Frequency-domain scattering and radiation patterns for wide frequency ranges are obtained via off-line discrete Fourier (DFT) analysis.
| Original language | English |
|---|---|
| Pages (from-to) | 65-75 |
| Number of pages | 11 |
| Journal | AEU-Archiv fur Elektronik und Ubertragungstechnik |
| Volume | 52 |
| Issue number | 2 |
| Publication status | Published - 1998 |
Keywords
- Antenna simulation
- Finite-difference time-domain
- Numerical modeling
- Radar cross-section