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A Small Low-Cost SAR Satellite for InSAR Measurements of Permanent Scatterers

Hounam, David and Moreira, Alberto and Mittermayer, Josef and Krieger, Gerhard (2004) A Small Low-Cost SAR Satellite for InSAR Measurements of Permanent Scatterers. In: Proceedings EUSAR 2004, 1, pp. 49-52. VDE Verlag. European Conference on Synthetic Aperture Radar (EUSAR), 2004-05-25 - 2004-05-27, Ulm, Germany. ISBN 3-8007-2828-1.

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Abstract

A major driver for the cost of a SAR satellite is the size of the antenna, which largely determines the dimensions of the payload, and, hence, indirectly of the whole satellite. Apart from influencing the sensitivity of the SAR, the dimensions of the SAR antenna also determine the width of the imaged swath and the strength of ambiguous responses. Ambiguities appear as ghosts or additional noise in the image. Techniques are discussed for suppress-ing ambiguities during processing, which are demonstrated to be viable for point targets. Targets with scattering characteristics which are stable over long periods of time can be used with interferometric SAR (InSAR) techniques to monitor small displacements. As these so-called permanent scatterers have point target characteristics and a relatively high RCS, a SAR instrument with a small antenna can be considered. It has been demonstrated that an interferometric SAR system measuring the long-term motion of permanent scatterers placed in geologically instable regions can serve a range of important and lucrative applications.

Document Type:Conference or Workshop Item (Speech, Paper)
Additional Information: LIDO-Berichtsjahr=2004,
Title:A Small Low-Cost SAR Satellite for InSAR Measurements of Permanent Scatterers
Authors:
AuthorsInstitution or Email of Authors
Hounam, DavidUNSPECIFIED
Moreira, AlbertoUNSPECIFIED
Mittermayer, JosefUNSPECIFIED
Krieger, GerhardUNSPECIFIED
Date:2004
Journal or Publication Title:Proceedings EUSAR 2004
Refereed publication:No
In SCOPUS:No
In ISI Web of Science:No
Volume:1
Page Range:pp. 49-52
Editors:
EditorsEmail
VDE ITG, UNSPECIFIED
Publisher:VDE Verlag
ISBN:3-8007-2828-1
Status:Published
Keywords:SAR, permanent scatterers, small satellites, ambiguity supression
Event Title:European Conference on Synthetic Aperture Radar (EUSAR)
Event Location:Ulm, Germany
Event Type:international Conference
Event Dates:2004-05-25 - 2004-05-27
Organizer:VDE
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
Deposited By: Dr.-Ing. Gerhard Krieger
Deposited On:31 Jan 2006
Last Modified:06 Jan 2010 19:54

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