AN APPLICATION OF PRIMARY PTD APPROXIMATION: BACKSCATTERING AT TRIANGULAR CYLINDER

Abstract

The purpose of the paper is to investigate the backscattering at a triangular cylinder with one soft (electric) face and two hard (magnetic) faces and to reveal the scattering properties of the geometry. In the paper, the backscattered field in the far-zone is introduced using the Physical Theory of Diffraction (PTD), one of the powerful high-frequency approximation techniques. First-order PTD approximation is obtained as a sum of the primary edge waves. Graphical results that have minimums in the radar cross-section represent the importance of geometry in applications of stealth technology. The method used in the paper allows the radar cross section (RCS) to calculate easily using simple trigonometric functions.

Keywords

• backscattering
• high-frequency approximation
• physical optics
• physical theory of diffraction
• stealth technology
• triangular cylinder

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