Advanced search options

Advanced Search Options 🞨

Browse by author name (“Author name starts with…”).

Find ETDs with:

in
/  
in
/  
in
/  
in

Written in Published in Earliest date Latest date

Sorted by

Results per page:

Sorted by: relevance · author · university · dateNew search

You searched for publisher:("Universite De Rennes"). Showing records 1 – 2 of 2 total matches.

Search Limiters

Last 2 Years | English Only

No search limiters apply to these results.

▼ Search Limiters

1. Dahlan, Samsul Haimi. Contribution to the body of revolution finite-difference time domain (BoR-FDTD) method - implementations of hybrid and multi-resolution approaches for fast simulation of electrically large axis-symmetrical antenna structures.

Degree: PhD, Universite De Rennes, 2012, Universite De Rennes

Subjects/Keywords: TK Electrical engineering. Electronics Nuclear engineering

Record DetailsSimilar RecordsGoogle PlusoneFacebookTwitterCiteULikeMendeleyreddit

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Dahlan, S. H. (2012). Contribution to the body of revolution finite-difference time domain (BoR-FDTD) method - implementations of hybrid and multi-resolution approaches for fast simulation of electrically large axis-symmetrical antenna structures. (Doctoral Dissertation). Universite De Rennes. Retrieved from http://eprints.uthm.edu.my/2864/

Chicago Manual of Style (16th Edition):

Dahlan, Samsul Haimi. “Contribution to the body of revolution finite-difference time domain (BoR-FDTD) method - implementations of hybrid and multi-resolution approaches for fast simulation of electrically large axis-symmetrical antenna structures.” 2012. Doctoral Dissertation, Universite De Rennes. Accessed August 12, 2020. http://eprints.uthm.edu.my/2864/.

MLA Handbook (7th Edition):

Dahlan, Samsul Haimi. “Contribution to the body of revolution finite-difference time domain (BoR-FDTD) method - implementations of hybrid and multi-resolution approaches for fast simulation of electrically large axis-symmetrical antenna structures.” 2012. Web. 12 Aug 2020.

Vancouver:

Dahlan SH. Contribution to the body of revolution finite-difference time domain (BoR-FDTD) method - implementations of hybrid and multi-resolution approaches for fast simulation of electrically large axis-symmetrical antenna structures. [Internet] [Doctoral dissertation]. Universite De Rennes; 2012. [cited 2020 Aug 12]. Available from: http://eprints.uthm.edu.my/2864/.

Council of Science Editors:

Dahlan SH. Contribution to the body of revolution finite-difference time domain (BoR-FDTD) method - implementations of hybrid and multi-resolution approaches for fast simulation of electrically large axis-symmetrical antenna structures. [Doctoral Dissertation]. Universite De Rennes; 2012. Available from: http://eprints.uthm.edu.my/2864/

2. Bucuci, Stefania. Imagerie haute résolution SER en chambre anéchoïque grâce à l'introduction d'un milieu diffusant : High resolution RCS imaging in anechoic chamber by introducing a random medium.

Degree: Docteur es, Traitement du signal et télécommunications, 2017, Rennes 1; Universite de rennes 1

Les mesures utilisées actuellement en chambres anéchoïque, pour la caractérisation de la surface équivalente radar (SER) sont généralement perturbées, en particulier en basse fréquence lorsque les parois de la chambre génèrent des trajets multiples. En basse fréquence l’épaisseur des matériaux absorbants devient faible devant la longueur d’onde et ceux-ci ne peuvent plus être considère comme parfaitement absorbants. Dans ce cas, le champ total incident sur la cible sous test est ainsi la somme du champ incident direct et des champs réfléchis par les parois. Basé sur le principe de retournement temporel qui permet de focaliser spatialement et temporellement une onde électromagnétique, l’objectif de la thèse est de présenter une nouvelle méthode d’imagerie microonde qui profite des degrés de liberté spatio-temporels de la propagation au sein d’un milieu diffusant afin de détecter une cible avec une haute résolution.

The currently used methods for radar cross section (RCS) measurements at low frequencies encounter several disturbing phenomena, such as the multipath propagation caused by reflections from the walls. Descending in frequency, the thickness of absorbent materials becomes small compared with the wavelength and they are no longer perfectly absorbent. Therefore, the total incident field on the target becomes the sum of the incident wave and the reflected waves from the walls of the chamber. Inspired by time reversal technique which allows spatial and temporal focusing of an electromagnetic wave, the objective of the thesis is to present a novel imaging method in the microwave range which benefits from the spatio-temporal degrees of freedom provided by the transmission through a random medium in order to detect a target with high resolution.

Advisors/Committee Members: Sharaiha, Ala (thesis director), Davy, Matthieu (thesis director).

Subjects/Keywords: Surface équivalente radar; Chambre anéchoïque; Retournement temporel; Chambre réverbérante; Milieu diffusant; Imagerie microonde; Antennes; Radar cross section; Anechoic chamber; Time reversal; Reverberation chamber; Random medium; Microwave imaging; Antennas

Record DetailsSimilar RecordsGoogle PlusoneFacebookTwitterCiteULikeMendeleyreddit

APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Bucuci, S. (2017). Imagerie haute résolution SER en chambre anéchoïque grâce à l'introduction d'un milieu diffusant : High resolution RCS imaging in anechoic chamber by introducing a random medium. (Doctoral Dissertation). Rennes 1; Universite de rennes 1. Retrieved from http://www.theses.fr/2017REN1S108

Chicago Manual of Style (16th Edition):

Bucuci, Stefania. “Imagerie haute résolution SER en chambre anéchoïque grâce à l'introduction d'un milieu diffusant : High resolution RCS imaging in anechoic chamber by introducing a random medium.” 2017. Doctoral Dissertation, Rennes 1; Universite de rennes 1. Accessed August 12, 2020. http://www.theses.fr/2017REN1S108.

MLA Handbook (7th Edition):

Bucuci, Stefania. “Imagerie haute résolution SER en chambre anéchoïque grâce à l'introduction d'un milieu diffusant : High resolution RCS imaging in anechoic chamber by introducing a random medium.” 2017. Web. 12 Aug 2020.

Vancouver:

Bucuci S. Imagerie haute résolution SER en chambre anéchoïque grâce à l'introduction d'un milieu diffusant : High resolution RCS imaging in anechoic chamber by introducing a random medium. [Internet] [Doctoral dissertation]. Rennes 1; Universite de rennes 1; 2017. [cited 2020 Aug 12]. Available from: http://www.theses.fr/2017REN1S108.

Council of Science Editors:

Bucuci S. Imagerie haute résolution SER en chambre anéchoïque grâce à l'introduction d'un milieu diffusant : High resolution RCS imaging in anechoic chamber by introducing a random medium. [Doctoral Dissertation]. Rennes 1; Universite de rennes 1; 2017. Available from: http://www.theses.fr/2017REN1S108

.