Estimation of Radar Cross-Section in Rayleigh, MIE, and Optical Regions by the 2-D-FDTD Simulation

ERGÜN YARDIM F., AKÇAM N.

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, vol.62, no.11, pp.5782-5789, 2014 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 62 Issue: 11
  • Publication Date: 2014
  • Doi Number: 10.1109/tap.2014.2356210
  • Journal Name: IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.5782-5789
  • Keywords: Finite-difference time domain (FDTD), near-field/far-field (NF/FF) transformation technique, radar cross-section (RCS), total field/scattering field (TF/SF) formulation
  • Gazi University Affiliated: Yes

Abstract

In this paper, the far-field electromagnetic fields were calculated by using near-field/far-field (NF/FF) transformation technique from the near field finite-difference time domain (FDTD) data obtained by total field/scattering field (TF/SF) formulation. To evaluate the effectiveness of scattering mechanisms depending on the frequency used, the target geometry and the electrical properties, first of all simple shapes such as a square cylinder, a circular cylinder, and an equilateral triangle, were studied. It has been shown that the radar cross section (RCS) calculations can be done in Rayleigh, Mie, and optical regions by the 2-D FDTD simulation. Finally, the RCS behavior of an aircraft model composed of simple shapes as ellipse and triangle are investigated for different illuminations and different frequencies.