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High-Resolution DEM generation by nonlocal filtering of TanDEM-X interferograms

Baier, Gerald and Rossi, Cristian and Lachaise, Marie and Zhu, Xiao Xiang and Bamler, Richard (2017) High-Resolution DEM generation by nonlocal filtering of TanDEM-X interferograms. Fringe 2017, 5.-9. Jun. 2017, Helsinki, Finnland.

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Abstract

We present a nonlocal synthetic aperture radar interferometry (InSAR) filter for TanDEM-X bistatic strip map interferograms, with the goal of generating a digital elevation model (DEM) from TanDEM-X interferograms with a higher resolution and accuracy than the default product. The filter is especially tuned for DEM generation as it takes into account the local topography and phase heterogeneity. Simulations and initial real data tests confirm that it significantly outperforms boxcar averaging, the currently employed phase denoising filter in the TanDEM-X processing chain, and circumvents some of the shortcomings of existing nonlocal filters.

Item URL in elib:https://elib.dlr.de/115949/
Document Type:Conference or Workshop Item (Speech)
Title:High-Resolution DEM generation by nonlocal filtering of TanDEM-X interferograms
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Baier, GeraldGerald.Baier (at) dlr.deUNSPECIFIED
Rossi, CristianCristian.Rossi (at) dlr.deUNSPECIFIED
Lachaise, Mariemarie.lachaise (at) dlr.deUNSPECIFIED
Zhu, Xiao Xiangxiao.zhu (at) dlr.deUNSPECIFIED
Bamler, Richardrichard.bamler (at) dlr.deUNSPECIFIED
Date:2017
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:DEM generation, InSAR noise filtering, nonlocal filter
Event Title:Fringe 2017
Event Location:Helsinki, Finnland
Event Type:international Conference
Event Dates:5.-9. Jun. 2017
Organizer:ESA
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 - Vorhaben hochauflösende Fernerkundungsverfahren
Location: Oberpfaffenhofen
Institutes and Institutions:Remote Sensing Technology Institute > SAR Signal Processing
Deposited By: Baier, Gerald
Deposited On:05 Dec 2017 10:46
Last Modified:31 Jul 2019 20:13

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