[Source_Name: Short_Name='SPACE SHUTTLES']
Shuttle Radar Topography Mission DTED Level 1 (3-arc second) Data (DTED-1)Entry ID: DMA_DTED
Abstract: The Shuttle Radar Topography Mission (SRTM) successfully collected Interferometric Synthetic Aperture Radar (IFSAR) data over 80 percent of the landmass of the Earth between 60 degrees North and 56 degrees South latitudes in February 2000. The mission was co-sponsored by the National Aeronautics and Space Administration (NASA) and National Geospatial-Intelligence Agency (NGA). NASA's Jet ... Propulsion Laboratory (JPL) performed preliminary processing of SRTM data and forwarded partially finished data directly to NGA for finishing by NGA's contractors and subsequent monthly deliveries to the NGA Digital Products Data Wharehouse (DPDW). All the data products delivered by the contractors conform to the NGA SRTM products and the NGA Digital Terrain Elevation Data (DTED) to the Earth Resources Observation & Science (EROS) Center. The DPDW ingests the SRTM data products, checks them for formatting errors, loads the SRTM DTED into the NGA data distribution system, and ships the public domain SRTM DTED to the U.S. Geological Survey (USGS) Earth Resources Observation & Science (EROS) Center.
Two resolutions of finished grade SRTM data are available through EarthExplorer from the collection held in the USGS EROS archive:
1 arc-second (approximately 30-meter) high resolution elevation data are only available for the United States.
3 arc-second (approximately 90-meter) medium resolution elevation data are available for global coverage. The 3 arc-second data were resampled using cubic convolution interpolation for regions between 60° north and 56° south latitude.
[Summary provided by the USGS.]
Purpose: SRTM data is being used to generate a digital topographic map of the Earth's land surface with data points spaced every 1 arc second for the United States of latitude and longitude (approximately 30 meters).
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Data Set Citation
Dataset Originator/Creator: National Geospatial-Intelligence Agency (NGA)
Dataset Title: Shuttle Radar Topography Mission DTED Level 1 (3-arc second) Data (DTED-1)
Dataset Publisher: USGS Earth Resources Observation and Science (EROS)Online Resource: http://egsc.usgs.gov/isb/pubs/factsheets/fs07103.html
Start Date: 2000-02-01Stop Date: 2000-02-31
Latitude Resolution: 130m
Longitude Resolution: 130m
Horizontal Resolution Range: 100 meters - < 250 meters
Vertical Resolution: 30m
Temporal Resolution: 1 Month
Temporal Resolution Range: Monthly - < Annual
ISO Topic Category
Quality The Absolute Horizontal Accuracy is 130m circular error at 90% probability and the Absolute Vertical Accuracy is +/- 30 m linear error at 90% probability. The quoted size of the cells (~3Mb) is smaller in northern latitudes.
Access Constraints SRTM DTED Level 1 (3 arc second) data for global coverage is distributed by the National Center for Earth Resources Observation & Science (EROS) on DVD. SRTM DTED Level 2 (1 arc second) data for the United States and territotial slands is distributed by the National Center for Earth Resources Observation & Science (EROS) on DVD. The product is "Finished" data supplied by NGA.
Use Constraints There is no guarantee of warranty concerning the accuracy of these data. Users should be aware that temporal changes may have occurred since the data was collected and that some parts of these data may no longer represent actual surface conditions. Users should not use these data for critical applications without a full awareness of their limitations. Acknowledgement of the originating agencies would be appreciated in products derived from these data. Any user who modifies the data set is obligated to describe the types of modifications they perform. User specifically agrees not to misrepresent the data set, nor to imply that changes made were approved or endorsed by the U.S. Geological Survey. Please refer to http://www.usgs.gov/privacy.html for the USGS disclaimer.
Data Set Progress
Distribution Media: Digital Download
Distribution Format: BIL, DTED or GeoTIFF
Fees: Free download of finished grade data.
Role: TECHNICAL CONTACT
Email: lta at usgs.gov
LTA Customer Services U.S. Geological Survey EROS Center 47914 252nd Street
City: Sioux Falls
Province or State: SD
Postal Code: 57198-0001
Role: DIF AUTHOR
Email: apjohnson at usgs.gov
City: Sioux Falls
Province or State: SD
Postal Code: 57198
Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 2005-12-08
Last DIF Revision Date: 2013-05-02