elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Impressum | Kontakt | English
Schriftgröße: [-] Text [+]

Very High Resolution Spaceborne SAR Tomography in Urban Environment

Zhu, Xiao Xiang und Bamler, Richard (2010) Very High Resolution Spaceborne SAR Tomography in Urban Environment. IEEE Transactions on Geoscience and Remote Sensing, 48 (12), Seiten 4296-4308. DOI: 10.1109/TGRS.2010.2050487. ISSN 0196-2892.

[img]
Vorschau
PDF - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
1MB

Offizielle URL: http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=5497277&tag=1

Kurzfassung

SAR tomography (TomoSAR) extends the synthetic aperture principle into the elevation direction for 3-D imaging. It uses stacks of several acquisitions from slightly different viewing angles (the elevation aperture) to reconstruct the reflectivity function along the elevation direction by means of spectral analysis for every azimuth-range pixel. The new class of meter-resolution spaceborne SAR systems (TerraSAR-X and COSMO-Skymed) offers a tremendous improvement in tomographic reconstruction of urban areas and man-made infrastructure. The high resolution fits well to the inherent scale of buildings (floor height, distance of windows, etc.). This paper demonstrates the tomographic potential of theses SARs and the achievable quality on the basis of TerraSAR-X spotlight data of urban environment. A new Wiener-type regularization to the Singular Value Decomposition (SVD) method � equivalent to a MAP estimator � for TomoSAR is introduced and is extended to the differential (4-D, i.e. space-time). Different model selection schemes for the estimation of the number of scatterers in a resolution cell are compared and proven to be applicable in practice. Two parametric estimation algorithms of the scatterers' elevation and their velocities are evaluated. First 3-D and 4-D reconstructions of an entire building complex (incl. its radar reflectivity) with very high level of detail from space-borne SAR data by pixel-wise TomoSAR are presented.

Dokumentart:Zeitschriftenbeitrag
Titel:Very High Resolution Spaceborne SAR Tomography in Urban Environment
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Zhu, Xiao XiangDLR-IMF/TUM-LMF
Bamler, RichardDLR-IMF/TUM-LMF
Datum:2010
Erschienen in:IEEE Transactions on Geoscience and Remote Sensing
Referierte Publikation:Ja
In Open Access:Nein
In SCOPUS:Ja
In ISI Web of Science:Ja
Band:48
DOI :10.1109/TGRS.2010.2050487
Seitenbereich:Seiten 4296-4308
ISSN:0196-2892
Status:veröffentlicht
Stichwörter:SAR tomography, differential SAR tomography, urban mapping, spotlight SAR, TerraSAR-X
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Raumfahrt
HGF - Programmthema:Erdbeobachtung
DLR - Schwerpunkt:Raumfahrt
DLR - Forschungsgebiet:R EO - Erdbeobachtung
DLR - Teilgebiet (Projekt, Vorhaben):R - Vorhaben hochauflösende Fernerkundungsverfahren
Standort: Oberpfaffenhofen
Institute & Einrichtungen:Institut für Methodik der Fernerkundung > SAR-Signalverarbeitung
Hinterlegt von: Xiao Xiang Zhu
Hinterlegt am:25 Okt 2010 13:17
Letzte Änderung:12 Dez 2013 20:45

Nur für Mitarbeiter des Archivs: Kontrollseite des Eintrags

Blättern
Suchen
Hilfe & Kontakt
Informationen
electronic library verwendet EPrints 3.3.12
Copyright © 2008-2013 Deutsches Zentrum für Luft- und Raumfahrt (DLR). Alle Rechte vorbehalten.