Modified FDTD near-to-far-field transformation for improved backscattering calculation of strongly forward-scattering objects

Author

Li, Xu ; Taflove, Allen ; Backman, Vadim

Author_Institution

Dept. of Biomed. Eng., Northwestern Univ., Evanston, IL, USA

Volume

4

fYear

2005

fDate

6/27/1905 12:00:00 AM

Firstpage

35

Lastpage

38

Abstract

We propose a simple yet effective modification to significantly improve the accuracy of the finite-difference time-domain (FDTD) near-to-far-field (NTFF) transformation for calculating the backscattering of objects having strong forward-scattering lobes. In the modified approach, we merely omit integrating over the near-field plane located in the forward-scattering region. We validate the proposed approach via comparison with rigorous analytical solutions of plane waves scattered by single and multiple dielectric spheres.

Keywords

backscatter; dielectric bodies; electromagnetic wave scattering; finite difference methods; radar cross-sections; FDTD; NTFF; backscattering; finite-difference time-domain; forward-scattering lobes; multiple dielectric spheres; near-to-far-field transformation; radar antennas; radar cross-sections; Backscatter; Dielectrics; Finite difference methods; Geometry; Light scattering; Optical scattering; Optical surface waves; Radar scattering; Shape; Time domain analysis; Finite-difference time-domain (FDTD) methods; near-to-far-field (NTFF) transformation; scattering;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2005.845038

Filename

1405986