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The Dual-Baseline Phase Unwrapping Correction framework for the TanDEM-X Mission Part 1: Theoretical description and algorithms

Lachaise, Marie and Fritz, Thomas and Bamler, Richard (2018) The Dual-Baseline Phase Unwrapping Correction framework for the TanDEM-X Mission Part 1: Theoretical description and algorithms. IEEE Transactions on Geoscience and Remote Sensing, 56 (2), pp. 780-798. IEEE - Institute of Electrical and Electronics Engineers. DOI: 10.1109/TGRS.2017.2754923 ISSN 0196-2892

Full text not available from this repository.

Official URL: http://ieeexplore.ieee.org/document/8064174/

Abstract

The TanDEM-X mission is the first free flying bistatic SAR mission. It has the primary objective to generate within a short time frame a global DEM of 10 m absolute vertical accuracy and 2 m relative height accuracy. For that, the whole land mass has been mapped at least twice with different baselines. The success of the mission depends on the accuracy of the final DEM and therefore on the reliability of the Phase Unwrapping (PU) algorithm. Hence, a robust and versatile PU method, which is in accordance with the acquisition concept, is necessary. This paper presents a new method which combines bistatic high-resolution interferometric data in order to perform an accurate phase unwrapping on a huge amount of data. The Dual- Baseline Phase Unwrapping Correction (DB-PUC) framework addresses this challenge by correcting errors that occurred during the single-baseline PU procedure. It benefits from the additional information available through the differential interferogram and the stereo-radargrammetric phase, which are used to correct region-wise the ambiguity bands of the misestimated unwrapped phases to be less sensitive to noise and possible temporal changes. The multi-level of the DB-PUC approach makes it flexible, computationally efficient and well adapted to deal with the various PU error scenarios. This framework is used operationally for the processing of the data of the TanDEM-X Mission.

Item URL in elib:https://elib.dlr.de/120311/
Document Type:Article
Title:The Dual-Baseline Phase Unwrapping Correction framework for the TanDEM-X Mission Part 1: Theoretical description and algorithms
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Lachaise, MarieIMF-SARUNSPECIFIED
Fritz, ThomasIMF-SARUNSPECIFIED
Bamler, RichardIMF-SARUNSPECIFIED
Date:2018
Journal or Publication Title:IEEE Transactions on Geoscience and Remote Sensing
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:56
DOI :10.1109/TGRS.2017.2754923
Page Range:pp. 780-798
Publisher:IEEE - Institute of Electrical and Electronics Engineers
ISSN:0196-2892
Status:Published
Keywords:InSAR, TanDEM-X Mission, MCF, dualbaseline phase unwrapping, error correction.
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Erdbeobachtung
DLR - Research theme (Project):R - Projekt TanDEM-X
Location: Oberpfaffenhofen
Institutes and Institutions:Remote Sensing Technology Institute > SAR Signal Processing
Remote Sensing Technology Institute > Leitungsbereich MF
Deposited By: Lachaise, Dr Marie
Deposited On:13 Jun 2018 14:13
Last Modified:13 Jun 2018 14:13

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