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A Refined GTD Ray System for an Embedded Object and its Polarimetric Behavior

Marquart, Nicolas Pascal und Molinet, Frédéric und Pottier, Eric (2008) A Refined GTD Ray System for an Embedded Object and its Polarimetric Behavior. IEEE Transactions on Geoscience and Remote Sensing, Seiten 2538-2546. DOI: 10.1109/TGRS.2008.916634.

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Offizielle URL: http://www.ieeexplore.ieee.org

Kurzfassung

A refined ray system based on the Geometrical Theory of Diffraction (GTD) for an object embedded in soil for a monostatic transmitter-receiver alignment is presented here. Apart from the investigation of the ``classical" reflections from the target, creeping waves are also taken into account and their formalism is presented. The objective of such a ray set is to better understand the different scattering mechanisms, which are presented in the complex scattering framework. In electromagnetic modelling based on GTD, a complex shape of a target is replaced by simpler canonical objects e.g. facets, cones, wedges, spheres or cylinders. Here, a cylinder is located in parallel and closely to the plane interface of two dielectrics half-spaces. In this paper, an example of air-soil is taken into analysis. The numerical results obtained from a varying incidence field are employed to describe the polarimetric characteristics of the diffracted field from grazing to perpendicular incidence for a transceiver. By representing the diffracted GTD field on the Poincaré sphere, the location on the sphere has a one-to-one relationship to the dielectric properties of the soil.

Dokumentart:Zeitschriftenbeitrag
Zusätzliche Informationen:©2008 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Titel:A Refined GTD Ray System for an Embedded Object and its Polarimetric Behavior
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Marquart, Nicolas PascalNICHT SPEZIFIZIERT
Molinet, FrédéricMOTHESIM
Pottier, EricUniversity of Rennes 1
Datum:September 2008
Erschienen in:IEEE Transactions on Geoscience and Remote Sensing
DOI :10.1109/TGRS.2008.916634
Seitenbereich:Seiten 2538-2546
Status:veröffentlicht
Stichwörter:Geometrical Theory of Diffraction (GTD), Creeping Waves, Radar Polarimetry, Ground Penetrating Radar (GPR), Soil moisture, Mine detection
HGF - Forschungsbereich:Verkehr und Weltraum (alt)
HGF - Programm:Weltraum (alt)
HGF - Programmthema:W EO - Erdbeobachtung
DLR - Schwerpunkt:Weltraum
DLR - Forschungsgebiet:W EO - Erdbeobachtung
DLR - Teilgebiet (Projekt, Vorhaben):W - Vorhaben Flugzeug-SAR (alt)
Standort: Oberpfaffenhofen
Institute & Einrichtungen:Institut für Hochfrequenztechnik und Radarsysteme > Radarkonzepte
Institut für Hochfrequenztechnik und Radarsysteme
Hinterlegt von: Dr. Nicolas Pascal Marquart
Hinterlegt am:06 Okt 2008
Letzte Änderung:12 Dez 2013 20:28

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