Bistatic RCS calculation for propellers at near-resonant frequencies

Article type: Research Article

Authors: Marák, Károly^a; | Pető, Tamás^a | Bilicz, Sándor^a | Gyimóthy, Szabolcs^a | Pávó, József^a

Affiliations: [a] Department of Broadband Infocommunications and Electromagnetic Theory, Budapest University of Technology and Economics, Hungary

Correspondence: [*] Corresponding author: Károly Marák, Department of Broadband Infocommunications and Electromagnetic Theory, Budapest University of Technology and Economics, Egry J. u. 18, 1111 Budapest, Hungary. E-mail: marak@hvt.bme.hu

Abstract: Scattering from propellers is investigated using the 3D Finite Element Method (FEM), alongside a simpler integral equation (IE) method using 1D discretization. It is shown that under certain conditions and near the propellers’ resonant frequency, results using the two methods are in agreement, justifying the use of the IE method; this is advantageous because of smaller computation times, and for providing a physical insight to the scattering phenomena at hand. Anechoic chamber measurements are performed to validate the numerical results.

Keywords: Finite element method, method of moments, propeller, radar detection, unmanned aerial vehicle

DOI: 10.3233/JAE-171255

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 59, no. 1, pp. 19-26, 2019