TanDEM-X - Edited Digital Elevation Model (EDEM) - Global, 30m

TanDEM-X (TerraSAR-X add-on for Digital Elevation Measurements) is an Earth observation radar mission that consists of a SAR interferometer built by two almost identical satellites flying in close formation. With a typical separation between the satellites of 120 m to 500 m a global Digital Elevation Model (DEM) has been generated.

The TanDEM-X 30m EDEM is a product variant of the global Digital Elevation Model (DEM) acquired in the frame of the German TanDEM-X mission between 2010 and 2014, and has a reduced pixel spacing of 1 arcseconds (arsec), which corresponds to 30m at the equator. An automated edition was developed by the Microwaves and Radar Institute at the German Aerospace Center (DLR) to have a full and clean coverage of all Earth’s landmasses from pole to pole.

Citation proposal
. TanDEM-X - Edited Digital Elevation Model (EDEM) - Global, 30m. https://gdk.gdi-de.org/geonetwork/srv/api/records/4ee664df-ceb9-4d59-bc6e-4df4da54b53d

Simple

Date ( Creation ): 2023-11-17T12:00:00

Edition

Identifier: https://geoservice.dlr.de/catalogue/srv/metadata/4ee664df-ceb9-4d59-bc6e-4df4da54b53d

Presentation form: Digital map

Purpose: The TanDEM-X 30m Edited DEM has been edited in order to have a full coverage.

Status: Completed

Point of contact

German Aerospace Center (DLR)

Point of contact

German Aerospace Center (DLR) - ( )

Maintenance and update frequency: As needed

Keywords

DLR
TDM
HR
TanDEM-X
EDEM
DEM
Digital Elevation Model
TDX-1
TSX-1
TDM 30m EDEM
Edited DEM
Global

GEMET - INSPIRE themes, version 1.0 ( Theme )

Elevation

Spatial scope ( Place )

Global

Use limitation: Nutzungseinschränkungen: Das DLR ist nicht haftbar für Schäden, die sich aus der Nutzung ergeben. / Use Limitations: DLR not liable for damage resulting from use.

Access constraints: Other restrictions

Use constraints: Other restrictions

Other constraints: Nutzungsbedingungen: https://geoservice.dlr.de/resources/licenses/tdm30-edited/License_for_the_Utilization_of_TanDEM-X_30m-EDEM_DCM_for_Scientific_Use.pdf Terms of Use: https://geoservice.dlr.de/resources/licenses/tdm30-edited/License_for_the_Utilization_of_TanDEM-X_30m-EDEM_DCM_for_Scientific_Use.pdf

Spatial representation type: Grid

Denominator: 60000

Metadata language: English

Character set: UTF8

Topic category

Elevation

Supplemental Information

Number of dimensions: 3

Dimension name: Column

Dimension size: 1296000

Resolution: 30 m

Dimension name: Row

Dimension size: 648000

Resolution: 30 m

Dimension name: Vertical

Dimension size: 1

Resolution: 1 m

Cell geometry: Area

Transformation parameter availability: false

Distribution format

GeoTIFF ()

OnLine resource: TanDEM-X DEM access - non-scientific users
Webpage for accessing/ordering TanDEM-X elevation models for non-scientific users.

OnLine resource: TanDEM-X DEM access - scientific users
Webpage with links and description for accessing TanDEM-X elevation models for scientific users.

OnLine resource: EOC Geoservice Map Context
EOC Geoservice Map Context (tdm:edem30)

OnLine resource: EOC Download Service
TanDEM-X Edited Digital Elevation Model (EDEM) - EOC Download Service

OnLine resource: TDM30_EDEM_EGM
WMS Access: TDM30 Edited Digital Elevation Model (EDEM)

OnLine resource: TDM30_EDEM_HSD
WMS Access: TDM30 Hill Shade Display (HSD)

OnLine resource: TDM30_EDEM_EDM
WMS Access: TDM30 Editing Mask (EDM)

OnLine resource: TDM30_EDEM_HEM
WMS Access: TDM30 Height Error Map (HEM)

OnLine resource: TDM30_EDEM_LCM
WMS Access: TDM30 Land Cover Map (LCM)

OnLine resource: TDM30_EDEM_HSC
WMS Access: TDM30 Hill Shade Combined (HSC)

OnLine resource: TDM30_EDEM_HSM
WMS Access: TDM30 Hill Shade Multidirectional (HSM)

OnLine resource: TDM30 - EOC Geoservice Data Guide
EOC Geoservice Data Guide

Hierarchy level: Dataset

Domain consistency

Measure identification: INSPIRE / Conformity_001

Conformance result

Date ( Publication ): 2010-12-08

Explanation: See the referenced specification

Pass: true

Statement: TDM 30 EDEM has been edited using the following DEMs for filling gaps are AW3D30, Nasadem, Lidar, REMA DEM and Arctic DEM.

Description

Data:

TanDEM-X DEM Product in 30m is considered as base Product. A new Water Bodies Layer (WBL) has been calculated considering the coherence of single scenes and a watershed algorithm. The WBL is used to separete the areas to be flattened (water) and filled (voids), which are edited with different technics and saved pixelwise in the Editing Mask (EDM). The editing process has been performed fully automatically, besides the center of Antarctica < - 88°, which has been edited in polar coordinates.

Quality Assurance:

The quality of the edited areas depends strongly from the used references, and the complexity of the waterbodies.