RCS Uncertainty Predictions for Scatterers with Uncertain Material Parameters Using FEM, Adjoints, and HOPS Technique

We present radar cross-section uncertainty predictions for dielectric scatterers with uncertain material parameters using higher order finite element method, adjoint solution, and higher order parameter sampling (HOPS) methodology. The HOPS method utilizes the adjoint problem to solve for gradient information, which is used to create a surrogate function that can replace traditional Monte Carlo methods. This reconstruction can be done using several different methods, each with their own strengths and weakness, but all greatly contributing to uncertainty quantification within computational electromagnetics.