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TanDEM-X DEM Calibration: Correction of systematic DEM errors by block adjustment

Gruber, Astrid and Wessel, Birgit and Huber, Martin (2009) TanDEM-X DEM Calibration: Correction of systematic DEM errors by block adjustment. In: Proceedings of the 2009 IEEE International Geoscience and Remote Sensing Symposium (IGARSS), pp. 761-764. 2009 IEEE International Geoscience and Remote Sensing Symposium (IGARSS), 12. - 17. Juli 2009, Cape Town, South Africa.

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Abstract

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, overlapping interferometric DEMs over a certain earth region is described 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 (Speech, Paper)
Title:TanDEM-X DEM Calibration: Correction of systematic DEM errors by block adjustment
Authors:
AuthorsInstitution or Email of Authors
Gruber, AstridAstrid.Gruber@dlr.de
Wessel, BirgitBirgit.Wessel@dlr.de
Huber, MartinMartin.Huber@dlr.de
Date:July 2009
Journal or Publication Title:Proceedings of the 2009 IEEE International Geoscience and Remote Sensing Symposium (IGARSS)
Refereed publication:No
In ISI Web of Science:No
Page Range:pp. 761-764
Status:Published
Keywords:TanDEM-X, InSAR, block adjustment, DEM/DTM, calibration
Event Title:2009 IEEE International Geoscience and Remote Sensing Symposium (IGARSS)
Event Location:Cape Town, South Africa
Event Type:international Conference
Event Dates:12. - 17. Juli 2009
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 18:43
Last Modified:12 Dec 2013 20:51

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