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Forest and Water Mapping with TanDEM-X

Bueso Bello, Jose Luis and Rizzoli, Paola and Sica, Francescopaolo and Valdo, Paolo (2019) Forest and Water Mapping with TanDEM-X. TerraSAR-X/TanDEM-X Science Team Meeting, 2019-10-21 - 2019-10-24, Oberpfaffenhofen, Germany.

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The interferometric SAR dataset acquired by TanDEM-X to generate a global Digital Elevation Model (DEM), covering at least twice the complete Earth’s mass, represents a unique data source to derive geo-information products at a global scale. Moreover, it gives the opportunity to monitor Earth’s dynamics at a local scale by the acquisition and analysis of time series. In the bistatic TanDEM-X system, characterized by the absence of temporal decorrelation, the volume correlation factor, which quantifies the amount of decorrelation due to scattering from a volume, is a good indicator to distinguish between forest and non-forest areas. A first global TanDEM-X forest/non-forest map at 50 m resolution, using such technique, has been released in May 2019 and is free downloadable for scientific use. In our study, we have further exploited the TanDEM-X bistatic data to determine deforestation in the past years. By applying an adaptive image segmentation approach, it has been possible to improve the forest/non-forest classification and to identify the detection of clear-cuts. In the case of water mapping with TanDEM-X, we are in the process of generating a global Water Body Layer (WBL), using the interferometric coherence of TanDEM-X interferometric acquisitions as the main input. The proposed approach takes also into account the geometric properties of SAR acquisition scenes, in order to mitigate the effects of geometric distortions, such as shadow and layover, and to improve the discrimination between water bodies and vegetated areas of low coherence.

Item URL in elib:https://elib.dlr.de/133446/
Document Type:Conference or Workshop Item (Speech)
Title:Forest and Water Mapping with TanDEM-X
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Bueso Bello, Jose LuisUNSPECIFIEDhttps://orcid.org/0000-0003-3464-2186UNSPECIFIED
Rizzoli, PaolaUNSPECIFIEDhttps://orcid.org/0000-0001-9118-2732UNSPECIFIED
Sica, FrancescopaoloUNSPECIFIEDhttps://orcid.org/0000-0003-1593-1492UNSPECIFIED
Valdo, PaoloUNSPECIFIEDhttps://orcid.org/0000-0003-0641-5808UNSPECIFIED
Date:October 2019
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:Synthetic Aperture Radar, SAR, Interferometry, Forest Mapping, Deforestation, Water Detection, DEM Editing
Event Title:TerraSAR-X/TanDEM-X Science Team Meeting
Event Location:Oberpfaffenhofen, Germany
Event Type:international Conference
Event Dates:2019-10-21 - 2019-10-24
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:Microwaves and Radar Institute
Microwaves and Radar Institute > Spaceborne SAR Systems
Deposited By: Bueso Bello, Jose Luis
Deposited On:13 Jan 2020 08:12
Last Modified:15 Jan 2020 11:27

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