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Super-resolution for 4-D SAR tomography via compressive sensing

Zhu, Xiao Xiang and Bamler, Richard (2010) Super-resolution for 4-D SAR tomography via compressive sensing. IEEE. EUSAR 2010, 7-10 June 2010, Aachen, Germany. ISBN 978-3-8007-3272-2.

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Official URL: http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5758719&abstractAccess=no&userType=inst


SAR tomography (TomoSAR) extends the synthetic aperture principle into the elevation direction for 3-D imaging. Since the orbits of modern space-borne SAR systems, like TerraSAR-X, are tightly controlled, the elevation resolution (depends on the elevation aperture size) is at least an order of magnitude lower than in range and azimuth. Hence, super-resolution algorithms are desired. The high anisotropic 3D resolution element renders the signals sparse in elevation. This property suggests using compressive sensing (CS) methods. The paper presents the theory of 4-D (differential, i.e. space-time) CS TomoSAR and compares it with classical tomographic methods. Super-resolution properties and point localization accuracies are demonstrated using simulations and real data. A CS reconstruction of a building complex from TerraSAR-X spotlight date is presented.

Document Type:Conference or Workshop Item (Speech)
Title:Super-resolution for 4-D SAR tomography via compressive sensing
AuthorsInstitution or Email of Authors
Zhu, Xiao XiangDLR,TUM
Bamler, RichardDLR,TUM
Date:7 June 2010
Refereed publication:Yes
In ISI Web of Science:No
Page Range:pp. 1-4
Series Name:Synthetic Aperture Radar (EUSAR), 2010 8th European Conference on
Keywords:super resolution, compressive sensing (CS), synthetic aperture radar (SAR), SAR tomography
Event Title:EUSAR 2010
Event Location:Aachen, Germany
Event Type:international Conference
Event Dates:7-10 June 2010
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Erdbeobachtung
DLR - Research theme (Project):R - Vorhaben hochauflösende Fernerkundungsverfahren
Location: Oberpfaffenhofen
Institutes and Institutions:Remote Sensing Technology Institute > SAR Signal Processing
Deposited By: Yuanyuan Wang
Deposited On:07 Sep 2011 14:24
Last Modified:25 Jun 2014 16:55

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