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Phase Unwrapping of Multi-Channel Synthetic Aperture Radar: Application to the TanDEM-X Mission

Lachaise, Marie (2015) Phase Unwrapping of Multi-Channel Synthetic Aperture Radar: Application to the TanDEM-X Mission. Dissertation. DLR-Forschungsbericht. DLR-FB 2015-37, 163 S.

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Abstract

The contribution of this thesis is the design and development of a new method which combines bistatic high-resolution interferometric data in order to perform a correct and accurate phase unwrapping on a huge amount of data. This is especially dedicated to the TanDEM-X Mission. 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. The former is used to correct the ambiguity bands of the misestimated unwrapped phases. The latter enables the assessment of the differential unwrapped phase and the correction of its potential errors region-wise. The region-wise correction of the integer number of cycles allows it to be less sensitive to noise and possible temporal changes. The DB-PUC framework is used during the operational processing (or re-processing) of the TanDEM-X acquisitions, which are used for the generation of the final global DEM. The second global coverage has been unwrapped with the proposed approach with a success rate of 96.5%.

Item URL in elib:https://elib.dlr.de/100297/
Document Type:Monograph (DLR-Forschungsbericht, Dissertation)
Title:Phase Unwrapping of Multi-Channel Synthetic Aperture Radar: Application to the TanDEM-X Mission
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Lachaise, MarieMarie.Lachaise (at) dlr.deUNSPECIFIED
Date:November 2015
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Number of Pages:163
ISSN:1434-8454
Status:Published
Keywords:SAR, InSAR, Phase Unwrapping, Multi-channel phase unwrapping, TanDEM-X
Institution:TU München
Department:Lehrstuhl für Methodik der Fernerkundung
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Earth Observation
DLR - Research theme (Project):R - Projekt TanDEM-X (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Remote Sensing Technology Institute > SAR Signal Processing
Deposited By: Lachaise, Dr Marie
Deposited On:02 Dec 2015 17:16
Last Modified:31 Jul 2019 19:57

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