ALIFERIS , Ioannis

Innovation pédagogique et outils numériques

Changer le cours magistral : pédagogies actives et classe inversée à Polytech'Nice-Sophia

In a first part, we study a method of reconstruction of permittivity and conductivity profiles, based on a bigradient conjugate method and an edge-preserving regularization technique. This method, previously developed for the case of plane-wave illumination, is enhanced in order to take into account the near-field of the emitting antennas. We...

Iannis Aliferis est physicien, Maître de Conférences à l'Université Nice Sophia Antipolis. Il enseigne l'électromagnétisme, les télécommunications, l'électronique, et les phénomènes stochastiques à Polytech'Nice Sophia, et mène parallèlement des recherches sur la diffraction directe et inverse en électromagnétisme, l'imagerie micro-onde, le...

Rencontre/Discussion avec Iannis Aliferis qui explique son parcours dans l'innovation de l'enseignement au sein de l'UNS, à l'occasion des 50 ans de l'Univeristé Nice Sophia Antipolis

Changer le cours magistral : pédagogies actives et classe inversée

Pédagogies actives, clickers et classe inversée à Polytech'Nice-Sophia

Doctoral

Doctoral

Doctoral

National audience

For sake of simplicity and execution speed, many imaging algorithms are based on two-dimensional approaches. We present a study on the relevance and validity domain of two-dimensional approaches to detect debris on airport runways in W-band (75-110 GHz), taking into account polarization (both 2D-TM and 2D-TE). The study deals, first with...

In this paper, we present quantitative image reconstructions (i.e. permittivity and conductivity profiles) from synthetic and experimental data. First, we perform the qualitative imaging for localizing the target in order to determine the investigation domain. Second, we solve the inverse-scattering problem via an iterative algorithm based on a...

This paper presents detection and imaging capabilities of a simple time-reversal focusing algorithm, applied to experimental data that are obtained under various radar scene configurations (single- or multiple-target in free-space or through-the-wall). Data are collected with the ultra-wideband surface penetrating radar SIMIS (Synthetic-Impulse...

International audience

International audience

This paper deals with a detailed study of an original system dedicated to scattering measurements of millimeter waves in the W -band. The system's main innovations lie in its high-precision swivel arm, semianechoic environment, flexibility for positioning the object on the measurement tower, as well as the postprocessing developed to correct...

International audience

National audience

International audience

We present an innovative system dedicated to millimeter wave scattering measurements in W-band. The principal innovations are the high-precision swivel arm, use of a semi-anechoic environment, flexibility for positioning the object under study, and post-processing to correct measurement errors. Different test objects are used for evaluating the...

International audience

Comparison of different techniques for short-range UWB radar imaging has been performed based on experimental data. To acquire experimental data, a video-impulse radar with a specially developed antenna system with a single transmitter antenna and an array of receiver antennas has been used. Topology of the receiver array was made in such a way...

International audience

Cet article présente la modélisation et la simulation d'un système d'imagerie microonde utilisé pour le diagnostic et le suivi des accidents vasculaires cérébraux (AVC). De nombreuses difficultés se présentent pour la modélisation précise et complète du système compte tenu de sa complexité. En conséquence, nous avons opté pour le logiciel Open...