About this Journal Submit a Manuscript Table of Contents
Modelling and Simulation in Engineering
Volume 2012 (2012), Article ID 328321, 9 pages
http://dx.doi.org/10.1155/2012/328321
Research Article

Radar Cross-Section Formulation of a Shell-Shaped Projectile Using Modified PO Analysis

Department of Electrical and Electronic Engineering, Bangladesh University of Engineering and Technology, Dhaka 1000, Bangladesh

Received 30 April 2012; Revised 11 August 2012; Accepted 12 August 2012

Academic Editor: Azah Mohamed

Copyright © 2012 Mohammad Asif Zaman and Md. Abdul Matin. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A physical optics based method is presented for calculation of monostatic Radar Cross-Section (RCS) of a shell-shaped projectile. The projectile is modeled using differential geometry. The paper presents a detailed analysis procedure for RCS formulation using physical optics (PO) method. The shortcomings of the PO method in predicting accurate surface current density near the shadow boundaries are highlighted. A Fourier transform-based filtering method is proposed to remove the discontinuities in the approximated surface current density. The modified current density is used to formulate the scattered field and RCS. Numerical results are presented comparing the proposed method with conventional PO method. The results are also compared with published results of similar objects and found to be in good agreement.