RCS Estimation of Singly Curved Dielectric Shell Structure with PMCHWT Method and Experimental Verification

Hyeong-Rae Im; Woobin Kim; Yeong-Hoon Noh; Ic-Pyo Hong; Jong-Gwan Yook

doi:10.3390/s22030734

RCS Estimation of Singly Curved Dielectric Shell Structure with PMCHWT Method and Experimental Verification

Sensors (Basel). 2022 Jan 19;22(3):734. doi: 10.3390/s22030734.

Authors

Hyeong-Rae Im¹, Woobin Kim¹, Yeong-Hoon Noh¹, Ic-Pyo Hong², Jong-Gwan Yook¹

Affiliations

¹ Department of Electrical and Electronic Engineering, Yonsei University, Seoul 03722, Korea.
² Department of Smart Information Technology Engineering, Kongju National University, Cheonan 31080, Korea.

Abstract

In this paper, a numerical algorithm for the electromagnetic scattering analysis of singly curved dielectric structures, which can be applied to a canopy of fighter aircraft, is presented with experimental verification. At first, the Poggio-Miller-Chang-Harrington-Wu-Tsai (PMCHWT) method is used as a MoM-based solution for the electromagnetic scattering of a dielectric material. Its formulation was generated with the EFIE formulation in a multi-region condition. The PMCHWT algorithm is implemented with C++ code, and the accuracy is verified by calculating the bistatic RCS of some canonical structures with conductive or dielectric materials. RCS measurement under quasi-anechoic condition is presented with its procedure and calibration method. The monostatic RCS results of a specially modeled singly curved dielectric structures are obtained analytically with the PMCHWT, as well as experimentally, revealing excellent agreement.

Keywords: Poggio–Miller–Chang–Harrington–Wu–Tsai (PMCHWT); method of moment (MoM); monostatic RCS measurement; radar cross section (RCS); singly curved dielectric.