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TanDEM-X: Block adjustment of interferometric height models

Wessel, Birgit and Gruber, Astrid and Huber, Martin and Roth, Achim (2009) TanDEM-X: Block adjustment of interferometric height models. In: Proceedings of the ISPRS Hannover Workshop 2009 " High-Resolution Earth Imaging for Geospatioal Information", International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences (Volume). ISPRS Hannover Workshop 2009 " High-Resolution Earth Imaging for Geospatioal Information", 2009-06-02 - 2009-06-05, Hannover, Germany. ISSN 1682-1750

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Abstract

The TanDEM-X mission will derive a global digital elevation model (DEM) with satellite SAR interferometry. The aimed accuracies are an absolute, resp. relative height error of 10m resp. 2m for 90% of the data. This paper gives an overview of the DEM adjustment within the TanDEM-X mission. The DEM adjustment estimates residual, systematic height offsets and deformations of each single interferometric DEM acquisition. The challenge of calibrating the TanDEM-X DEMs lies in the magnitude of the systematic errors: these errors are in the same order like the random error of about 2 m. For the estimation of the corrections a least-squares adjustment of adjacent interferometric DEMs over a certain earth region is designed. In this paper adjustment results on simulated DEM data are shown to validate the approach. The tests are carried out for different dense ground control point configurations. Further the improvements by a combined adjustment of the two coverages are demonstrated.

Document Type:Conference or Workshop Item (Paper, Poster)
Title:TanDEM-X: Block adjustment of interferometric height models
Authors:
AuthorsInstitution or Email of Authors
Wessel, BirgitUNSPECIFIED
Gruber, AstridUNSPECIFIED
Huber, MartinUNSPECIFIED
Roth, AchimUNSPECIFIED
Date:June 2009
Journal or Publication Title:Proceedings of the ISPRS Hannover Workshop 2009 " High-Resolution Earth Imaging for Geospatioal Information", International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
Refereed publication:No
In ISI Web of Science:No
Editors:
EditorsEmail
Heipke, ChristianInstitut für Photogrammetrie und GeoInformation
Jacobsen, KarstenInstitut für Photogrammetrie und GeoInformation
Müller, SönkeInstitut für Photogrammetrie und GeoInformation
Sörgel, UweInstitut für Photogrammetrie und GeoInformation
ISSN:1682-1750
Status:Published
Keywords:TanDEM-X, InSAR, block, adjustment, method, DEM/DTM, error, calibration
Event Title:ISPRS Hannover Workshop 2009 " High-Resolution Earth Imaging for Geospatioal Information"
Event Location:Hannover, Germany
Event Type:international Conference
Event Dates:2009-06-02 - 2009-06-05
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 - Projekt TanDEM-X (old)
Location: Oberpfaffenhofen
Institutes and Institutions:German Remote Sensing Data Center > Environment and Security
Deposited By: Dr.-Ing. Birgit Wessel
Deposited On:21 Feb 2010 18:54
Last Modified:12 Dec 2013 20:51

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