Marquart, Nicolas Pascal (2007) Investigations on the Polarimetric Behavior of a Target near the Soil. In: Proceedings of Wave Propagation in Communication, Microwave Systems and Navigation (WFMN), pp. 104-109. ITG Information Technology within VDE. Wave Propagation in Communication, Microwave Systems and Navigation (WFMN), 2007-07-04 - 2007-07-05, Chemnitz, Germany.
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Official URL: http://www.tu-chemnitz.de/etit/hf/wfmn07/
Abstract
The diffraction of a plane wave by an object situated close to an interface of a two-layer medium has been investigated by many authors and an extensive literature exists on this topic. However, only a few publications have been devoted to the analysis of the polarimetric behaviour of the diffracted field. In general, very simple ray models based on the Geometrical Optic (GO) are considered involving single and double bounced waves for explaining some experimental results. Here, this problem is again investigated by using a more refined ray model based on the Geometrical Theory of Diffraction (GTD). As a result a ray system composed of 13 different rays was implemented for the monostatic case by applying the principle of Fermat. The different spatial and creeping waves give a physical insight in the mechanisms involved in the entire scattering process. Depending on the geometrical properties of the target, lit and shadow regions arise in the backscattered GTD field for a variation from perpendicular to grazing incidence for a monostatic alignment of the transmitting and receiving antenna. The separating line of such a lit and shadow region is called a Surface Shadow Boundary (SSB). A special emphasis is attributed to the transition regions near the shadow boundaries where the reflected spatial waves disappear and transform into creeping waves leading to a strong attenuation. The diffracted field for look angles related to the transition zones has a characteristic polarimetric behaviour which is represented on the Poincaré sphere. The typical locations on the sphere can be exploited in order to get information about the geometrical parameters of the target and its height above the ground.
Item URL in elib: | https://elib.dlr.de/49523/ | ||||||||
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Document Type: | Conference or Workshop Item (Speech, Paper) | ||||||||
Title: | Investigations on the Polarimetric Behavior of a Target near the Soil | ||||||||
Authors: |
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Date: | October 2007 | ||||||||
Journal or Publication Title: | Proceedings of Wave Propagation in Communication, Microwave Systems and Navigation (WFMN) | ||||||||
Refereed publication: | No | ||||||||
Open Access: | Yes | ||||||||
Gold Open Access: | No | ||||||||
In SCOPUS: | No | ||||||||
In ISI Web of Science: | No | ||||||||
Page Range: | pp. 104-109 | ||||||||
Editors: |
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Publisher: | ITG Information Technology within VDE | ||||||||
Series Name: | WFMN 2007 Conference Proceedings | ||||||||
Status: | Published | ||||||||
Keywords: | Geometrical Theory of Diffraction, Uniform Theory of Diffraction, Radar polarimetry, Poincaré sphere | ||||||||
Event Title: | Wave Propagation in Communication, Microwave Systems and Navigation (WFMN) | ||||||||
Event Location: | Chemnitz, Germany | ||||||||
Event Type: | international Conference | ||||||||
Event Dates: | 2007-07-04 - 2007-07-05 | ||||||||
Organizer: | Chemnitz University of Technology | ||||||||
HGF - Research field: | Aeronautics, Space and Transport (old) | ||||||||
HGF - Program: | Space (old) | ||||||||
HGF - Program Themes: | W EO - Erdbeobachtung | ||||||||
DLR - Research area: | Space | ||||||||
DLR - Program: | W EO - Erdbeobachtung | ||||||||
DLR - Research theme (Project): | W - Vorhaben Entwicklung eines Mini-SAR (old) | ||||||||
Location: | Oberpfaffenhofen | ||||||||
Institutes and Institutions: | Microwaves and Radar Institute > Microwave Systems Microwaves and Radar Institute | ||||||||
Deposited By: | Marquart, Dr. Nicolas Pascal | ||||||||
Deposited On: | 20 Feb 2008 | ||||||||
Last Modified: | 31 Jul 2019 19:20 |
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