Radar cross-section formulation of a shell-shaped projectile using modified PO analysis

  • Authors:

  • Mohammad Asif Zaman;Md. Abdul Matin

  • Affiliations:

  • Department of Electrical and Electronic Engineering, Bangladesh University of Engineering and Technology, Dhaka, Bangladesh;Department of Electrical and Electronic Engineering, Bangladesh University of Engineering and Technology, Dhaka, Bangladesh

  • Venue:
  • Modelling and Simulation in Engineering
  • Year:
  • 2012

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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 proposedmethod with conventional PO method. The results are also compared with published results of similar objects and found to be in good agreement.