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Fusion of monostatic/bistatic InSAR stacks for urban area analysis via distributed scatterers

Goel, Kanika and Adam, Nico (2013) Fusion of monostatic/bistatic InSAR stacks for urban area analysis via distributed scatterers. IEEE Geoscience and Remote Sensing Letters, 11 (4), pp. 733-737. IEEE - Institute of Electrical and Electronics Engineers. doi: 10.1109/LGRS.2013.2278204. ISSN 1545-598X.

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Official URL: http://ieeexplore.ieee.org/xpl/tocresult.jsp?isnumber=6678086


Interferometric synthetic aperture radar (SAR) is a powerful technique providing meter-precision elevation maps and millimeter-precision surface displacement maps. Since 2007, the high-resolution SAR satellite TerraSAR-X allows monitoring of even single buildings from space using advanced monostatic repeat-pass stacking techniques. Furthermore, the launch of its twin satellite TanDEM-X in 2010 facilitates bistatic single-pass SAR interferometry. The main objective of this mission is the generation of a global digital elevation model. It also provides a configurable SAR platform for demonstrating new interferometric techniques and applications. However, in dense urban areas, standard TanDEM-X elevation models are inaccurate because ambiguities in radar layover areas cannot be solved. This letter describes the potential of joint monostatic and bistatic (motion-free and atmosphere-free) SAR interferometric stacking for an improved scene elevation and surface deformation estimation in complex urban areas. It involves exploiting distributed scatterers (DSs) using an advanced high-resolution small-baseline subset algorithm. Since most of the scatterers within a radar image can be classified as DSs, there is an increasing focus on an optimal processing of DSs for urban area monitoring. The fusion technique and an application test case are presented using a high-resolution spotlight mixed TerraSAR-X/TanDEM-X data stack of Las Vegas, USA.

Item URL in elib:https://elib.dlr.de/86617/
Document Type:Article
Title:Fusion of monostatic/bistatic InSAR stacks for urban area analysis via distributed scatterers
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Goel, KanikaKanika.Goel (at) dlr.deUNSPECIFIED
Adam, NicoNico.Adam (at) dlr.deUNSPECIFIED
Date:28 August 2013
Journal or Publication Title:IEEE Geoscience and Remote Sensing Letters
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
DOI :10.1109/LGRS.2013.2278204
Page Range:pp. 733-737
EditorsEmailEditor's ORCID iD
Gamba, Paolopaolo.gamba@unipv.itUNSPECIFIED
Publisher:IEEE - Institute of Electrical and Electronics Engineers
Series Name:IEEE Geoscience and Remote Sensing Letters
Keywords:InSAR, PSI, SBAS, Distributed Scatterer, TerraSAR-X, TanDEM-X
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Earth Observation
DLR - Research theme (Project):R - Vorhaben hochauflösende Fernerkundungsverfahren (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Remote Sensing Technology Institute > SAR Signal Processing
Deposited By: Goel, Kanika
Deposited On:11 Dec 2013 15:04
Last Modified:08 Mar 2018 18:30

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