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Absolute Phase Estimation from TerraSAR-X Acquisitions using Wideband Interferometry

Brcic, Ramon and Eineder, Michael and Bamler, Richard (2008) Absolute Phase Estimation from TerraSAR-X Acquisitions using Wideband Interferometry. In: CEOS SAR Calibration and Validation Workshop 2008, pp. 1-4. CEOS SAR 2008, 2008-11-27 - 2008-11-28, Oberpfaffenhofen, Deutschland.

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Estimation of topography for the generation of digital elevation models requires unwrapping of the interferometric phase to obtain the absolute phase. When the topography changes rapidly or the geometry is unfavourable, phase unwrapping cannot always be performed correctly leaving gaps or errors in the digital elevation model. Based on taking the differential phase between two subband interferogramsn, the delta-k technique can artifically increases the height of ambiguity by up to several orders of magnitude. This renders phase unwrapping unnecessary and directly provides the absolute phase. Here we present some preliminary results demonstrating the application of delta-k interferometry to TerraSAR-X data.

Item URL in elib:https://elib.dlr.de/57376/
Document Type:Conference or Workshop Item (Speech, Paper)
Title:Absolute Phase Estimation from TerraSAR-X Acquisitions using Wideband Interferometry
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Date:November 2008
Journal or Publication Title:CEOS SAR Calibration and Validation Workshop 2008
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Page Range:pp. 1-4
Keywords:delta-k, absolute phase, wideband interferometry, phase unwrapping
Event Title:CEOS SAR 2008
Event Location:Oberpfaffenhofen, Deutschland
Event Type:international Conference
Event Dates:2008-11-27 - 2008-11-28
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:Remote Sensing Technology Institute > SAR Signal Processing
Deposited By: Brcic, Dr. Ramon
Deposited On:19 Jan 2009
Last Modified:04 Apr 2013 15:24

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