À propos de nous Nantes Université est un établissement public d’enseignement supérieur et de recherche qui propose un modèle d’université
inédit en France unissant une université, un hôpital universitaire (CHU de Nantes), un institut de recherche technologique (IRT Jules Verne), un organisme national de recherche (Inserm) ainsi que Centrale Nantes, l’école des Beaux-Arts Nantes Saint-Nazaire et l’École Nationale Supérieure d’Architecture de Nantes. Ces acteurs concentrent leurs forces pour développer l’excellence de la recherche nantaise et offrir de nouvelles opportunités de formations , dans tous les domaines de la connaissance. Durable et ouverte sur le monde , Nantes Université veille à la qualité des conditions d'études et de travail offertes à ses étudiantes, étudiants et personnels, pour favoriser leur épanouissement sur tous ses campus de Nantes, Saint-Nazaire et La Roche-sur-Yon. Mission The calculation of the scattered field from a manufactured object or a rough surface finds applications in remote sensing and Radar stealth. Asymptotic/approximated methods can be developed to solve this issue. In comparison to a full-wave method, like the method of moments (MoM), they are able to provide rapid results, but their precision is not well-known. On the other hand, the MoM gives “exact” results, but the computer resources need to solve the resulting linear system can be prohibitive. In addition, the increasing of the dielectric permittivity significantly increases the size of the linear system. A means to solve this issue is to apply the impedance boundary condition or Leontovich approximation. Firstly, the selected candidate will investigate this approach, which will be validated from the PMCHWT (Poggio Miller-Chang-Harrington-Wu-Tsai) surface integral equation solved by the Galerkin MoM Rao Wilton-Glisson basis functions. For a single realization of the sea surface, the monostatic scattered far-field will be computed from IBC and compared with PMCHWT versus the incidence angle and the wind speed. The program will be written in MatLab. Secondly, in the same way, to treat the electromagnetic scattering from an object coated with a thin layer, the Higher Order Impedance Boundary Condition combined to the MoM will be implemented. Profil PhD in computer science or computer engineering - Eléments du dossier de candidature (lettre de motivation, CV, travaux, etc.) : A CV and a cover letter. In the cover letter, the candidate must demonstrate in-depth knowledge of scattering electromagnetic modeling, particularly regarding the application of the method of moments to a three-dimensional dielectric object. Compétences et qualifications requises : A deep knowledge in electromagnetic scattering Program in MatLab Write a Journal article in English Autonomy Team spirit Rigor Where to apply Website: https://app.beetween.com/WeaselWeb/p/#/apply/job/fujv5rrem26v3/modeling-of-the-radar-cross-section-from-the-full-wave-method-of-moments
