Dted level 0 was derived from nga dted level 1 to support a federal. This transmittal represents a fictitious continent in the northeast atlantic ocean. The dted format was developed for the distribution of gridded elevation data that was assembled by the us defense mapping agency dma. Dted level 2 is the basic high resolution elevation data source for all military activities and systems that require landform, slope, elevation, andor terrain roughness in a digital format. If there are features you desperately need, feel free to. If not you should download the data from ngas dafif page. Level 0 has a post spacing of 30 arc seconds in latitude direction ca. Raster to dteddata management toolbox documentation. It consists of geographic, attribute, and textual data stored on cdroms. We use the acronym dted generically to describe terrain data.
Although no standards exist, the defacto resolution for level 3 dted is a rd arc second 10 meter, level 4 is 19th arc second 3 meter and level 5 dted is 127th arc second 1 meter. The digital elevation models dem derived from the srtmxsar data are provided in the dtedformat. Vmap level 0 is the low resolution component of the vmap family of products. A file format like dt0 dted level 0 file is a standard way that information is encoded for storage in a computer file. Scope basis of this document is the performance specification digital terrain elevation data dted dma, 1996 provided by the national imaging and mapping agency nima. Dted level 0, a new nima data base, is the result of a joint globedma initiative, which resulted in the joint design and dma production just before dma was reorganized into nima of dted level 0. The geospatial engine now provides access to imagery of the earth, maps and other geospatial information produced by the national imagery and mapping agency. If you download files one at a time, you can get dted or geotiff in addition to bil, but each download takes multiple clicks. Each dted file contains elevation data for a 1 degree latitude by 1 degree longitude cell. I know i can download it, but you can only download small bits at a time.
National geospatial intelligence agency nga of the u. The following table provides a list of products available through the geospatial engine for public download. For information on locating map data for download over the internet, see the. Milprf89020 digital terrain elevation data \ dted \ this specification defines the requirements within national imagery and mapping agency\s \nima\ digital terrain elevation data base which supports various weapon and training systems. You can see how the dted 1 grid misses the very highest terrain. The lowest resolution data is the dted level 0, with a grid spacing of 30. Srtm dted is a uniform matrix of elevation values indexed to specific points on the ground. Dted was used as the source for most of eurasia and large parts of africa and the americas. Radio mobile rf propagation simulation software dted. Dted level 2 30m will be available thru the 2000 sts99 shuttle ifsar mission in 2001. Vmap level 1 contains medium resolution data at the 1. The horizontal datum is the world geodetic system 1984 wgs84 and the vertical datum is mean sea level as determined by the wgs84 earth gravitational model egm 96 geoid.
Fme is the data integration platform with the best support for spatial. The dt0 dted level 0 file format specifies how bits are used to encode information in a digital storage medium. This edition includes the shuttle radar topography mission \srtm\ dted level 1 and level 2 requirements. The files have file names with the extension dtn, where n is the level of the dted product. It allows a gross representation of the earths surface for general modeling and assessment activities. Over the years dted has been produced several different ways. Turn practically any file into a digital terrain elevation data raster, or conversely, convert dted files into hundreds of other formats using fme. Because of the known limitations and problems with the existing dted specification the higher resolution data is often called highresolution terrain.
The lowest resolution data is the dted level 0, with a grid spacing of 30 arcseconds, or about 1 kilometer. To the best of our knowledge, no dted level 3 or higher has been produced in the nga dted format. Magnetic cdroms which, in addition to the digital terrain elevation data, contain such supplementary data as digital mean elevation data dmed which provides statistical information for the digital file of the elevation data to each 15 x 15 cell, in addition to the names file and the help and methods of use file. Soft copy products are those nonstocked mapping products available through dla that can be downloaded at the link below registration required.
And this is level 2 this time with the dted grid displayed. Digital terrain model interpolation for mobile devices using dted level 0 elevation data. Digital terrain elevation data national geospatial. Both polygonal and gridded data sets are provided in the download. Level 1 has a post spacing of approximately 90 meters. Nga products can be downloaded using the geoint delivery platform. Global multiresolution terrain elevation data 2010. Currently only converts dted1dted2 no longer in development due to personal time constraints. Dted level 0, a new nima data base, is the result of a joint globedma initiative, which resulted in the joint design and dma production just before dma was.
Dted level 0 may be of value to scientific, technical, and other communities for and applications that require terrain elevation, slope, andor surface roughness information. Read here what the dted file is, and what application you need to open or convert it. The stf contains geotypical open terrain, consisting of pseudo dted level 1 terrain data and pseudo vmap level 1 feature data. The image below shows the northwest quadrant of that dted cell with some vmap level 0 data to help provide some sa. The national geospatialintelligence agency nga does not sell or perform services for the public. Dted level 0 elevation post spacing is 30 arc second nominally one kilometer. Jan 20, 2020 the dted format for level 0, 1 and 2 is described in u. Next ill zoom all the way in on the highest elevation values and switch to a 10ft contour interval. This is the best resolution dted map level that the app can use, with a nominal 30 meter cell spacing. I remember about 78 years ago that data was still obtainable but it doesnt appear as though it is. At the usgs eros center, we study land change and produce land change data products used by researchers, resource managers, and policy makers across the nation and around the world. Level 0 files contain elevation data spaced at 30 arcsecond intervals approximately 1km. Dted files digital terrain elevation data what it is.
You can find published specifications for dted at the nga website. Dted level 2 is a uniform gridded matrix of terrain elevation. Hi, does anyone know if i can buy a cd or dvd of level 0 dted data for the whole world. In the end, i managed to add dted layer using rasterlayer.
Go to the raster exporter section at the bottom of the page. Each tiles extent is one degree in each direction, plus a half pixel on each edge so adjacent tiles have one column and row of overlap. Im kind of in an odd situation and need dted level 0 data but it looks like the nga raster roam site is down. In support of military applications, the national imagery and mapping agency nima has developed standard digital datasets digital terrain elevation data dted which is a uniform matrix of terrain elevation values which provides basic quantitative data for systems and applications that require terrain elevation, slope, andor surface roughness information. Some code to load and process digital terrain elevation data dted files.
The input can only be a single band raster dataset. File formats may be either proprietary or free and may be either unpublished or open. Sourceforge provides the worlds largest selection of open source software. Dted is a standard of digital datasets which consists of a matrix of terrain elevation values, i. Nov 30, 2011 this new elevation data called global multiresolution terrain elevation data 2010 gmted2010, replaces the thirty year old gtopo30 terrain model.
This page provides access to nima digital products available for public download. We also operate the landsat satellite program with nasa, and maintain the largest civilian collection of images of the earths land surface in existence, including tens of millions of satellite. Use the free 21day full working demo to process the file at your location. File open dt0 dted level 0 file data conversion ai. Dted file extension the low cost mapworks surfaces addon running inside civil3d will read nga digital terrain elev data level 0 2. Shuttle radar topography mission dted level 1 3arc second.
The dted level 0 data is relatively small, and is often published as a concatenation of large area or global tiles in other than dted format. Click on the image at the required latlon and wait for the next page to be displayed, centered on these coordinates. Converts digital terrain elevation data from one level to another. Fmes data conversion capabilities enable you to move files between the dted standard and any of the hundreds of formats it supports including. This new elevation data called global multiresolution terrain elevation data 2010 gmted2010, replaces the thirty year old gtopo30 terrain model.
Dted level 0 may be of value to scientific, technical, and other communities for and applications that require terrain elevation, slope, andor surface. The digital elevation models dem derived from the srtmxsar data. Choose import dem dted level 0, 1 or 2 from the file menu and then. The dted format for level 0, 1 and 2 is described in u. Digital terrain model interpolation for mobile devices. Used in study to find large flat areas of world as possible places to locate gammaray telescope array. Level 0 has a post spacing of approximately 900 meters.
The maximum dted 1 elevation is 3333 ft and the maximum dted 2 elevation is 3360 ft. Gmted2010 is a suite of seven raster data products. Dted level 1 corresponds to medium scale hardcopy products, and has a post spacing of three arcseconds, or 100 meter nominal resolution. Earth resources observation and science eros center. Dted data is available at three different resolutions, which are referred to as level 0, level 1 and level 2. Gesch global land onekm base elevation globe model and. Dted level 0 data provides approximately 1km resolution of elevation data. Dted level 0 corresponds to small scale hardcopy products, and has a post spacing. The dma later changed its name to national imagery and mapping agency nima but is now called the national geospatial intelligence agency nga. Geological survey and the national geospatialintelligence agency have released an updated and more accurate global elevation model that pulls data from digital terrain elevation data dted from the shuttle radar topography mission srtm. Splits a raster dataset into separate files based on the dted tiling structure. Those products and services that are available to the public can be obtained from the following sources.
Dted files come in different levels depending on the resolution of the data. Because of the known limitations and problems with the existing dted specification the higher resolution data is often called highresolution terrain information or hrti herty. There are three levels of the dted tiling scheme available. Dted level 0 corresponds to small scale hardcopy products, and has a post spacing of 30 arcseconds, or one kilometer nominal resolution. Digital terrain elevation data dted map and data library. The 1 kilometer data and some higherresolution data is available online, as are product specifications and documentation. Maps extend a half a cell outside the requested map limits. Choose import dem dted level 0, 1 or 2 from the file menu and then select the file, which will usually have the filename extension. Level 1 data are spaced at 3 arcseconds approximately 90m and level 2 data are spaced at 1 arcsecond approximately 30m intervals.
Digital terrain elevation data geographic data format dted stands for digital terrain elevation data geographic data format. Milprf89020 digital terrain elevation data \dted\ this specification defines the requirements within national imagery and mapping agency\s \nima\ digital terrain elevation data base which supports various weapon and training systems. It is unclear what file sizes will be used for that data. Digital terrain elevation data dted is a digital elevation model dem standard developed by the national imagery and mapping agency nima to support aircraft radar simulation and prediction. Military specification digital terrain elevation data dted milprf89020b, and amongst other parameters describes the resolution for each level.
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