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TanDEM-X Performance Analysis

Huber, Sigurd and Younis, Marwan and Krieger, Gerhard (2008) TanDEM-X Performance Analysis. In: Proceedings of the European Conference on Synthetic Aperture Radar (EUSAR), p. 4. European Conference on Synthetic Aperture Radar (EUSAR), 2008-06-02 - 2008-06-05, Friedrichshafen, Germany.

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TanDEM-X (TerraSAR-X add-on for Digital Elevation Measurement) is a space borne earth observation mis-sion with the goal of generating a global Digital Elevation Model (DEM) with an unprecedented accuracy corre-sponding to the HRTI-3 specifications. TanDEM-X will fly in a special orbit formation (HELIX formation) with the fully compatible TerraSAR-X (TSX-1) satellite in order to collect interferometric SAR data. It is planned to cover the earth surface twice with different baselines, in order to ease phase unwrapping. Within a mission dura-tion of only three years, data for a global HRTI-3 DEM shall be acquired. The paper is divided into two parts. Starting with the TanDEM-X mission objective, the height performance model is presented, taking into account several error sources, like thermal decorrelation, quantization errors, range- and azimuth-ambiguities, misregistration as well as volume decorrelation. The analysis is extended to dif-ferent terrain-types, showing a significant impact on the height accuracy. Based on a global terrain classification map, a first rough estimate of the global DEM performance is given. The second part concentrates on an analysis of the impact of the block adaptive quantiser (BAQ) in terrain with high dynamic range in backscatter power (e.g. urban areas). Simulation results based on TerraSAR-X measure-ment data will be presented.

Document Type:Conference or Workshop Item (Paper, Poster)
Title:TanDEM-X Performance Analysis
AuthorsInstitution or Email of Authors
Krieger, GerhardUNSPECIFIED
Date:June 2008
Journal or Publication Title:Proceedings of the European Conference on Synthetic Aperture Radar (EUSAR)
Refereed publication:No
In ISI Web of Science:No
Page Range:p. 4
Keywords:TanDEM-X, Performance, BAQ
Event Title:European Conference on Synthetic Aperture Radar (EUSAR)
Event Location:Friedrichshafen, Germany
Event Type:international Conference
Event Dates:2008-06-02 - 2008-06-05
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:Microwaves and Radar Institute > Radar Concepts
Microwaves and Radar Institute
Deposited By: Sigurd Huber
Deposited On:23 Jul 2008
Last Modified:12 Dec 2013 20:31

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