SRTM X-SAR - Elevation Mosaic - Global

The SRTM X-SAR Elevation Mosaic is an aggregation of DLR's SRTM X-SAR DTED files.

The DTED Level-2 files have been generated from Synthetic Aperture Radar (SAR) data acquired by the German-Italian X-band interferometric SAR system during the Shuttle Radar Topography Mission (SRTM) between February 11 and 22, 2000. The X-band system was flown and operated onboard the Space Shuttle Endeavor, along with a NASA C-Band SAR system. The SRTM project page at DLR provides additional information on the SRTM X-band mission ( http://www.dlr.de/eoc/en/desktopdefault.aspx/tabid-5515/9214_read-17716/ ). Further details on the mission in general, the technology, accuracies, and applications are available in http://www2.jpl.nasa.gov/srtm/SRTM_paper.pdf .

The original DTED files have been grouped and mosaicked into 30 x 30 degree tiles. Six out of the total of 48 tiles were empty since they do not contain any DTED files. The resulting 42 tiles are stored as uncompressed GeoTIFF files. The files have been supplemented with nine cubic convolution resampled overviews for fast web delivery.

Citation proposal
. SRTM X-SAR - Elevation Mosaic - Global. https://gdk.gdi-de.org/geonetwork/srv/api/records/c03846b9-b94b-4dc4-a989-ee58bf7afb5d

Simple

Date ( Creation ): 2010-10-11T17:00:00

Identifier: https://geoservice.dlr.de/catalogue/srv/metadata/c03846b9-b94b-4dc4-a989-ee58bf7afb5d

Presentation form: Digital map

Purpose: The purpose of the SRTM X-SAR Elevation Mosaic is to enable and facilitate access to and visualisation of DLR's SRTM data through standardized web services.

Status: Completed

Point of contact

German Aerospace Center (DLR)

Maintenance and update frequency: Not planned

Keywords ( Theme )

DLR
Elevation
Space Shuttle
STS-99
SRTM
X-SAR
Global
inspireidentifiziert

GEMET - INSPIRE themes, version 1.0 ( Theme )

Höhe

Access constraints: Other restrictions

Use constraints: Other restrictions

Other constraints: Nutzungsbedingungen: https://geoservice.dlr.de/resources/licenses/srtm_xsar/DLR_SRTM_XSAR_ReadMe.pdf / Terms of use: https://geoservice.dlr.de/resources/licenses/srtm_xsar/DLR_SRTM_XSAR_ReadMe.pdf

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.

Spatial representation type: Grid

Denominator: 50000

Metadata language: German

Character set: UTF8

Topic category

Elevation

Supplemental Information: Units are meters. Heights are stored in 1 meter levels within the WGS84 vertical datum. The NoData value of this dataset is -32767.

Number of dimensions: 3

Dimension name: Row

Dimension size: 1598400

Resolution: 25 m

Dimension name: Column

Dimension size: 510600

Resolution: 25 m

Dimension name: Vertical

Dimension size: 1

Resolution: 1 m

Cell geometry: Area

Transformation parameter availability: false

Distribution format

GeoTIFF ()

OnLine resource: DLR SRTM Webpage
Webpage with links and mission descriptions

OnLine resource: srtm_x-sar_dem_mosaic
WMS access to SRTM X-SAR Elevation Mosaic

OnLine resource: srtm_x-sar_dem_mosaic
WCS access to SRTM X-SAR Elevation Mosaic

OnLine resource: https://geoservice.dlr.de/eoc/elevation/wms?SERVICE=WMS&REQUEST=GetCapabilities

OnLine resource: https://geoservice.dlr.de/eoc/elevation/wcs?SERVICE=WCS&REQUEST=GetCapabilities

OnLine resource: EOC Geoservice Map Context
EOC Geoservice Map Context (srtm:x-sar)

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

Horizontal accuracy (absolute): ±20m 90% circular error

Horizontal accuracy (relative): ±15m 90% circular error

Vertical accuracy (absolute): ±16m 90% linear error

Vertical accuracy (relative): ±6m 90% linear error

Description: Calculation of a list of files that are contained in each 30x30 degree tile of the world grid

Date / Time: 2010-07-30T18:00:00

Description: Merging the files from the list into one GeoTIFF file. The following GDAL v1.7.2 command was used: gdal_merge.py -of GTiff -co TFW=YES -co TILED=YES -init -32767 -n -32767

Date / Time: 2010-07-31T09:00:00

Description: Calculation of the overviews for each GeoTIFF tile. The following GDAL v1.7.2 command was used: gdaladdo -r cubic GEOTIFF_FILE 4 8 16 32 64 128 256 512 1024