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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Eyraud, Christelle
Institut Fresnel
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (7/7 displayed)
- 2021Complex-structured 3D-printed wireframes as asteroid analogues for tomographic microwave radar measurementscitations
- 2021Analysis of full microwave propagation and backpropagation for a complex asteroid analogue via single-point quasi-monostatic datacitations
- 2020Complex-structured 3D-printed wireframes as asteroid analogues for tomographic microwave radar measurementscitations
- 2019Influence of the description of the scattering matrix on permittivity reconstruction with a quantitative imaging procedure: polarization effectscitations
- 2015Properties of the 67P/Churyumov-Gerasimenko interior revealed by CONSERT radarcitations
- 2012A large 3D target with small inner details : A difficult cocktail for imaging purposes without a-priori knowledge on the scatterers geometry,
- 2007Full-Wave Three-Dimensional Microwave Imaging With a Regularized Gauss-Newton Method-- Theory and Experiment
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article
Analysis of full microwave propagation and backpropagation for a complex asteroid analogue via single-point quasi-monostatic data
Abstract
International audience ; Context. Information carried by the full wave field is particularly important in applications involving wave propagation, back-propagation, and a sparse distribution of measurement points, such as in tomographic imaging of a small Solar System body.Aims: With this study, our aim is to support the future mission and experiment design, such as for example ESA’s HERA, by providing a complete mathematical and computational framework for the analysis of structural full-wave radar data obtained for an asteroid analogue model. We analyse the direct propagation and back-propagation of microwaves within a 3D printed analogue in order to distinguish its internal relative permittivity structure.Methods. We simulate the full-wave interaction between an electromagnetic field and a three-dimensional scattering target with an arbitrary shape and structure. We apply the Born approximation and its back-projection (the adjoint operation) to evaluate and back-propagate the wave interaction at a given point within the target body. As the data modality can have a significant eect on the distinguishability of the internal details, we examine the demodulated wave and the wave amplitude as two alternative data modalities and perform full-wave simulations in frequency and time domain.Results. The results obtained for a single-point quasi-monostatic measurement configuration show the eect of the direct and higher order scattering phenomena on both the demodulated and amplitude data. The internal mantle and void of the analogue were found to be detectable based on backpropagated radar fields from this single spatial point, both in the time domain and in the frequency domain approaches, with minor differences due to the applied signal modality.Conclusions. Our present findings reveal that it is feasible to observe and reconstruct the internal structure of an asteroid via scarce experimental data, and open up new possibilities for the development of advanced space radar applications such as tomography.