Improvements to the finite-difference time-domain method for calculating the radar cross section of a perfectly conducing target

Update Item Information
Publication Type Journal Article
School or College College of Engineering
Department Electrical & Computer Engineering
Creator Furse, Cynthia M.; Gandhi, Om P.
Other Author Mathur, S. P.
Title Improvements to the finite-difference time-domain method for calculating the radar cross section of a perfectly conducing target
Date 1990-01-01
Description The finite-difference time-domain (FDTD) method has been used extensively to calculate scattering and absorption from both dielectric objects and perfectly conducting objects. Several improvements to the FDTD method for calculating the radar cross section (RCS) of a perfectly conducting target are presented in this paper. Sinusoidal and pulsed FDTD excitations are compared to determine an efficient method of finding the frequency response of targets. The maximum cell size, the minimum number of external cells, and a new method to eliminate field storage in the shielded internal volume of perfect conductors to reduce the computer storage requirements of FDTD are discussed. The magnetic field dc offset induced by surface currents on perfectly conductive objects is observed and its effects removed by postprocessing to achieve convergence of RCS calculations. RCS calculations using the FDTD method in two dimensions are presented for both square and circular infinite cylinders illuminated by both TE and TM polarized plane waves. The RCS of a metal cube in three dimensions is also presented. Good agreement between FDTD calculations and theoretical values is achieved for all cases, and parameters necessary to achieve this agreement are examined.
Type Text
Publisher Institute of Electrical and Electronics Engineers (IEEE)
Journal Title IEEE Transactions on Microwave Theory and Techniques
Volume 38
Issue 7
First Page 919
Last Page 927
Subject Finite-difference time-domain; FDTD
Subject LCSH Radar cross sections
Language eng
Bibliographic Citation Furse, C. M., Mathur, S. P., & Gandhi, O. P. (1990). Improvements to the finite-difference time-domain method for calculating radar cross section of a perfectly conducing target. IEEE Transactions on Microwave Theory and Techniques, 38(7), 919-27. July.
Rights Management (c) 1990 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Format Medium application/pdf
Format Extent 989,151 bytes
Identifier ir-main,14127
ARK ark:/87278/s6dr3cmk
Setname ir_uspace
ID 702891
Reference URL https://collections.lib.utah.edu/ark:/87278/s6dr3cmk