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Advances in automatic InSAR-derived TanDEM-X DEM editing

Gonzalez, Carolina and Bueso Bello, Jose Luis and Gollin, Nicola and Carcereri, Daniel and Rizzoli, Paola and Zink, Manfred (2022) Advances in automatic InSAR-derived TanDEM-X DEM editing. In: Proceedings of the European Conference on Synthetic Aperture Radar, EUSAR. European Conference on Synthetic Aperture Radar (EUSAR), 2022-07-25 - 2022-07-27, Leipzig, Germany. ISSN 2197-4403.

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Abstract

InSAR-derived digital elevation models (DEMs) are currently the best way to generate global and homogeneous products representing the Earth's topography. Nevertheless DEMs derived from InSAR are not always complete and can contain artifacts (e.g. invalid values caused by the side-looking nature of SAR) or not represent the surface height in case of penetration into volumetric targets such as forests or snow covered regions. For these reasons the global TanDEM-X DEM has been completely edited at 30m resolution, in order to make it suitable for a large number of applications, such as orthorectification, processing of SAR acquisitions and hydrological modelling. Indeed, the results of this gap-less global TanDEM-X DEM version are currently being used for the processing of the new TanDEM-X data to generate an updated layer, the so-called TanDEM-X DEM 2020. Moreover, TerraSAR-X and TanDEM-X are continuing the bistatic operation and new interferometric acquisitions allow for the generation of further DEM updates, for example for monitoring dynamic changes in the cryosphere or in forested areas. Each new DEM can have gaps or noisy water surfaces, which need to be edited as well. For these newly generated DEMs we developed an advanced automatic editing as direct extension of the interferometric processing chain. The process includes the generation of different land cover maps and maps of parameters describing the acquisition geometry to facilitate the editing of the DEM in the best possible way. This paper presents the new editing approach.

Item URL in elib:https://elib.dlr.de/186991/
Document Type:Conference or Workshop Item (Speech)
Title:Advances in automatic InSAR-derived TanDEM-X DEM editing
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Gonzalez, Carolinacarolina.gonzalez (at) dlr.dehttps://orcid.org/0000-0002-9340-1887
Bueso Bello, Jose LuisJose-Luis.Bueso-Bello (at) dlr.dehttps://orcid.org/0000-0003-3464-2186
Gollin, NicolaNicola.Gollin (at) dlr.dehttps://orcid.org/0000-0003-0477-3273
Carcereri, DanielDaniel.Carcereri (at) dlr.dehttps://orcid.org/0000-0002-3956-1409
Rizzoli, PaolaPaola.Rizzoli (at) dlr.dehttps://orcid.org/0000-0001-9118-2732
Zink, Manfredmanfred.zink (at) dlr.dehttps://orcid.org/0000-0002-4308-5636
Date:July 2022
Journal or Publication Title:Proceedings of the European Conference on Synthetic Aperture Radar, EUSAR
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:No
ISSN:2197-4403
Status:Published
Keywords:editing DEM, single InSAR DEM
Event Title:European Conference on Synthetic Aperture Radar (EUSAR)
Event Location:Leipzig, Germany
Event Type:international Conference
Event Dates:2022-07-25 - 2022-07-27
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 - Support TerraSAR-X/TanDEM-X operations
Location: Oberpfaffenhofen
Institutes and Institutions:Microwaves and Radar Institute > Spaceborne SAR Systems
Deposited By: Gonzalez, Carolina
Deposited On:22 Jun 2022 11:29
Last Modified:13 Jan 2023 14:47

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