Award Data

We propose algorithm development and efficient GPU implementation of numerical PDE solvers based on four novel high-order methodologies: 1) High-order Discontinuous Galerkin approaches, 2) Fast High-Order boundary integral methods, 3) Convergent FFT-based methodologies for evaluation of computational boundary conditions, and 4) Fourier Continuation methods. These methodologies are applicable to a ...

The present text proposes development of efficient, accurate and rapidly-convergent algorithms for the simulation of propagation and scattering of electromagnetic fields within and around structures that (i) Consist of complex combinations of penetrable materials as well as perfect and imperfect conductors, and, (ii) Possess complex geometrical characteristics, including open surfaces, metallic c ...

The present text proposes development of a new approach for the numerical evaluation of high-frequency electromagnetic scattering for structures of interest to DoD. This approach, which relies on high-order high-frequency integral asymptotics, is entirelyrigorous: it should account fully for all scatterer complexities and all electromagnetic effects - including multiple-scattering, diffraction, ca ...

The present text proposes development of a high-order, high-frequency simulation infrastructure for the evaluation of radar cross-sections in the high-frequency regime. Relying on newly developed high-frequency integral equation methods, the proposedapproach is entirely rigorous: it accounts fully for all scatterer complexities and all electromagnetic effects, including edges and corners, multiple ...

The present text proposes development of a software infrastructure for the prediction of antenna patterns on and around aircraft, for frequencies throughout the electromagnetic spectrum - including UHF through L bands as well as arbitrarily high frequencies - and applicable to aircraft which, like those designed for low observability, contain non perfectly conducting surface materials. Relying on ...

The present text proposes development of a software infrastructure for the prediction of antenna patterns on and around aircraft, for frequencies throughout the electromagnetic spectrum - including UHF through L bands as well as arbitrarily high-frequencies---and applicable to aircraft which, like those designed for low observability, contain non perfectly conducting surface materials. Relying on ...

The present text proposes the development of a computational infrastructure to enable rapid creation of high-quality conforming finite-element computational models---compatible with all existing finite-element simulation tools. The specific proofs-of-concept to be pursued in the Phase I will revolve around generation of tetrahedral meshes, but extensions to other types of finite-element types (e.g ...

ABSTRACT: We propose development of an efficient physics-based computational capability for simulation of complex MIMO-radar clutter, with applicability to single- and multi-platform transmitter-receiver systems, which accounts accurately, on the basis of Maxwell's equations, for all relevant multi-path propagation and scattering effects. Our effort will enable simulation of scattering ...

ABSTRACT: This effort focuses on development of efficient algorithms for the simulation of propagation and scattering of electromagnetic fields within and around structures that (i) Consist of complex combinations of penetrable materials as well as perfect and imperfect conductors, and, (ii) Possess complex geometrical characteristics, including open surfaces and metallic coatings, as well ...

We propose development of accurate and efficient exact-physics computational electromagnetics (CEM) solvers for accurate evaluation of RF signature characteristics of complex targets of interest to MDA. For accuracy and modeling flexibility the proposed codes combine novel fast, high-order frequency- and time-domain algorithms put forth in recent yearswhich can accurately and efficiently reso ...