Active control of helmholtz fields in 3d using an array of sources

NJA Egarguin, S Zeng, D Onofrei, J Chen - Wave Motion, 2020 - Elsevier
In this paper, we present a strategy for the active manipulation of Helmholtz fields using an
array (swarm) of coupling sources with prescribed fixed positions. More specifically, we …

[PDF][PDF] Active manipulation of exterior electromagnetic fields by using surface sources

D Onofrei, E Platt, NJA Egarguin - Quarterly of Applied …, 2020 - researchgate.net
In this paper, we establish a scheme for the active manipulation of electromagnetic fields in
prescribed exterior regions using a surface source. We prove the existence of the necessary …

Active control of electromagnetic fields in layered media

C Qi, S Zeng, NJA Egarguin, D Onofrei… - … Waves and Applications, 2024 - Taylor & Francis
This article presents a numerical strategy for actively manipulating electromagnetic (EM)
fields in layered media. In particular, we develop a scheme to characterize an EM source …

Active manipulation of Helmholtz scalar fields: near-field synthesis with directional far-field control

NJA Egarguin, D Onofrei, C Qi, J Chen - Inverse Problems, 2020 - iopscience.iop.org
In this article, we propose a strategy for the active manipulation of scalar Helmholtz fields in
bounded near-field regions of an active source while maintaining desired radiation patterns …

Feasibility analysis for active near/far field acoustic pattern synthesis in free space and shallow water environments

C Qi, NJA Egarguin, D Onofrei… - Acta Acustica, 2021 - acta-acustica.edpsciences.org
In this paper, a detailed sensitivity and feasibility analysis of the active manipulation scheme
for scalar Helmholtz fields proposed in our previous works, in both free space and constant …

Sensitivity analysis for active electromagnetic field manipulation in free space

C Qi, NJA Egarguin, S Zeng, D Onofrei… - Applied Mathematics in …, 2022 - Taylor & Francis
This paper presents a detailed sensitivity analysis of the active manipulation scheme for
electromagnetic (EM) fields in free space. The active EM fields control strategy is designed …

Active manipulation of Helmholtz scalar fields in an ocean of two homogeneous layers of constant depth

NJA Egarguin, D Onofrei, C Qi… - Inverse Problems in …, 2021 - Taylor & Francis
In this work, we prove the possibility of actively controlling the acoustic field in an ocean
consisting of two homogeneous layers of constant depth using a surface source embedded …

Active control of scalar Helmholtz fields in the presence of known impenetrable obstacles

L Besabe, D Onofrei - Advances in Inverse Problems for Partial …, 2023 - books.google.com
In this paper, we consider the question of actively manipulating scalar Helmholtz fields
radiated by a given source that is supported on a compact domain. We claim that the field …

Feasibility Analysis for the Problem of Active Near Field/Far Field Acoustic Pattern Synthesis in Free Space and Shallow Water Environments

C Qi, NJA Egarguin, D Onofrei, J Chen - arXiv preprint arXiv:2007.03093, 2020 - arxiv.org
In this paper, a detailed sensitivity analysis of the active manipulation scheme for scalar
Helmholtz fields proposed in our previous works, in both free space and constant-depth …