Pixel-and model-based microwave inversion with supervised descent method for dielectric targets
We present a general framework of applying supervised descent method (SDM) to the pixel-
and model-based full-wave inversion of microwave data for dielectric targets. SDM is a …
and model-based full-wave inversion of microwave data for dielectric targets. SDM is a …
Processing the 2D and 3D Fresnel experimental databases via topological derivative methods
This paper presents reconstructions of homogeneous targets from the 2D and 3D Fresnel
databases by one-step imaging methods based on the computation of topological derivative …
databases by one-step imaging methods based on the computation of topological derivative …
[HTML][HTML] Imaging of the internal structure of an asteroid analogue from quasi-monostatic microwave measurement data-I. The frequency domain approach
Context. The internal structure of small Solar System bodies (SSSBs) is still poorly
understood, although it can provide important information about the formation process of …
understood, although it can provide important information about the formation process of …
Testing inversion algorithms againts experimental data: 3D targets.
A Litman, L Crocco - Inverse Problems, 2009 - hal.science
One of the strengths of Institut Fresnel in Marseille, France, is the tight coupling which exists
between experiments and theory. This is how the idea came about, inspired by the Ipswich …
between experiments and theory. This is how the idea came about, inspired by the Ipswich …
[HTML][HTML] Experimental demonstration of spectrally broadband Huygens sources using low-index spheres
Manipulating the excitation of resonant electric and magnetic multipole moments in
structured dielectric media has unlocked many sophisticated electromagnetic functionalities …
structured dielectric media has unlocked many sophisticated electromagnetic functionalities …
Complex permittivity determination from far-field scattering patterns
C Eyraud, JM Geffrin, A Litman… - IEEE Antennas and …, 2014 - ieeexplore.ieee.org
An accurate knowledge of the complex permittivity value of materials is compulsory when
performing experimental electromagnetic applications. Unfortunately, these values are not …
performing experimental electromagnetic applications. Unfortunately, these values are not …
Noninvasive imaging of three-dimensional micro and nanostructures by topological methods
We present topological derivative and energy based procedures for the imaging of micro
and nano structures using one beam of visible light of a single wavelength. Objects with …
and nano structures using one beam of visible light of a single wavelength. Objects with …
An adaptive finite element method in quantitative reconstruction of small inclusions from limited observations
JB Malmberg, L Beilina - arXiv preprint arXiv:1603.04870, 2016 - arxiv.org
We consider a coefficient inverse problem for the dielectric permittivity in Maxwell's
equations, with data consisting of boundary measurements of one or two backscattered or …
equations, with data consisting of boundary measurements of one or two backscattered or …
A time-domain multigrid solver with higher-order born approximation for full-wave radar tomography of a complex-shaped target
LI Sorsa, M Takala, C Eyraud… - IEEE Transactions on …, 2020 - ieeexplore.ieee.org
This article introduces and evaluates numerically a multigrid solver for non-linear
tomographic radar imaging. Our goal is to enable the fast and robust inversion of sparse …
tomographic radar imaging. Our goal is to enable the fast and robust inversion of sparse …
Optimization methods for in-line holography
We present a procedure to reconstruct objects from holograms recorded in in-line
holography settings. Working with one beam of polarized light, the topological derivatives …
holography settings. Working with one beam of polarized light, the topological derivatives …