Abstract
A numerical finite-difference time-domain (FDTD) approach for electromagnetic scattering from a dielectric target over randomly rough surface is developed in a three dimensional model. The rough surface is truncated in the simulation by using periodic surface extension. One period of rough surface is related to the surface correlation length. Generation of incident waves upon a rough surface is presented. Numerical model of a target on/above a rough surface is designed. Polarized bistatic scattering from the target and rough surface is obtained based on numerical distribution of near fields. A comparison of three-dimensional and conventional two-dimensional models is made. It shows that the back scattering from a rough surface is significantly enhanced due to the target on/above the rough surface.
| Original language | English |
|---|---|
| Pages (from-to) | 550-560 |
| Number of pages | 11 |
| Journal | Jisuan Wuli/Chinese Journal of Computational Physics |
| Volume | 24 |
| Issue number | 5 |
| State | Published - Sep 2007 |
| Externally published | Yes |
Keywords
- 3-D target/rough surface
- Bistatic scattering
- FDTD
- Periodic boundary condition