TY  - EJOU
AU  - Ma, Yujing 
AU  - Wang, Zhongwang 
AU  - Zhang, Jieyuan 
AU  - Huo, Ruijin 
AU  - Yuan, Xiaohui 

TI  - Sensitivity Analysis of Electromagnetic Scattering from Dielectric Targets with Polynomial Chaos Expansion and Method of Moments
T2  - Computer Modeling in Engineering \& Sciences

PY  - 2024
VL  - 140
IS  - 2
SN  - 1526-1506

AB  - In this paper, an adaptive polynomial chaos expansion method (PCE) based on the method of moments (MoM) is proposed to construct surrogate models for electromagnetic scattering and further sensitivity analysis. The MoM is applied to accurately solve the electric field integral equation (EFIE) of electromagnetic scattering from homogeneous dielectric targets. Within the bistatic radar cross section (RCS) as the research object, the adaptive PCE algorithm is devoted to selecting the appropriate order to construct the multivariate surrogate model. The corresponding sensitivity results are given by the further derivative operation, which is compared with those of the finite difference method (FDM). Several examples are provided to demonstrate the effectiveness of the proposed algorithm for sensitivity analysis of electromagnetic scattering from homogeneous dielectric targets.
KW  - Adaptive polynomial chaos expansion method; method of moments; radar cross section; electromagnetic scattering

DO  - 10.32604/cmes.2024.048488