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Compressive sensing for high resolution differential SAR tomography - the SL1MMER algorithm

Zhu, Xiao Xiang and Bamler, Richard (2010) Compressive sensing for high resolution differential SAR tomography - the SL1MMER algorithm. IGARSS 2010, 25-30 July 2010, Honolulu, Hawaii, US. ISBN 978-1-4244-9566-5. ISSN 2153-6996

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Official URL: http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=5654021&tag=1

Abstract

Differential SAR tomography extends the synthetic aperture principle into the elevation and time directions for 4-D imaging. With modern meter-resolution space-borne SAR systems like TerraSAR-X (TS-X), systematic tomographic imaging of urban infrastructure and its deformations becomes feasible. We demonstrate the potential of TS-X data for this purpose and introduce several novel concepts. Since building deformation in general is nonlinear, e.g. due to thermal dilation, we start from a tomographic system formulation that is general enough to allow for the inclusion of motion models (linear, periodic, etc.). By appropriate warping of the time axis we map the motion model function to become linear and lead to a peak in the spectral domain. For the differential tomographic inversion itself we propose a 2-D compressive sensing (CS) based approach—“SL1MMER”. We demonstrate the super-resolution power and the robustness of SL1MMER both with simulated and with real data. We also show that it provides an attractive compromise between parametric and non-parametric methods. A full reconstruction of a building complex and its seasonal deformation from a stack of TS-X spotlight data is finally presented.

Document Type:Conference or Workshop Item (Speech)
Title:Compressive sensing for high resolution differential SAR tomography - the SL1MMER algorithm
Authors:
AuthorsInstitution or Email of Authors
Zhu, Xiao XiangDLR/TUM
Bamler, RichardDLR/TUM
Date:26 July 2010
Page Range:pp. 1-4
ISSN:2153-6996
ISBN:978-1-4244-9566-5
Status:Published
Keywords:differential SAR tomography, nonlinear motion, compressive sensing, SL1MMER, super-resolution, TerraSAR-X
Event Title:IGARSS 2010
Event Location:Honolulu, Hawaii, US
Event Type:international Conference
Event Dates:25-30 July 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: Xiao Xiang Zhu
Deposited On:25 Oct 2010 13:16
Last Modified:08 May 2014 23:22

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