Radio mobile rf propagation simulation software dted. National geospatial intelligence agency nga of the u. Maps extend a half a cell outside the requested map limits. It consists of geographic, attribute, and textual data stored on cdroms. Exporting dted level 2 to dted level 0 global mapper forum. Digital terrain model interpolation for mobile devices. Dted file extension the low cost mapworks surfaces addon running inside civil3d will read nga digital terrain elev data level 02.
Current dted format does not handle the higher resolution data very well, since the finest resolution that can be implemented is 0. Dted was used as the source for most of eurasia and large parts of africa and the americas. Falconview doesnt support dted 0 so this is only a curiosity. Add dted data to a map layer geonet, the esri community. Dted 0 is unique because in addition to the normal elevation file there are files containing the average, maximum and minimum elevation for 3 degree by 3 degree boxes centered on each dted post. The dt0 dted level 0 file format specifies how bits are used to encode information in a digital storage medium.
Digital terrain elevation data dted map and data library. Dted level 0 corresponds to small scale hardcopy products, and has a post spacing of 30 arcseconds, or one kilometer nominal resolution. The lowest resolution data is the dted level 0, with a grid spacing of 30 arcseconds, or about 1 kilometer. The output pixel size is dictated by the dted level, and the data is converted and stored as signed, 16bit integers. The lowest resolution data is the dted level 0, with a grid spacing of 30. Smaller islands with a vertical relief of at least 15 meters must also be included. Jan 20, 2020 the dted format for level 0, 1 and 2 is described in u. Im kind of in an odd situation and need dted level 0 data but it looks like the nga raster roam site is down. 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. Nasa has released version 2 of the shuttle radar topography mission digital topographic data also known as the finished version. Each dted file contains elevation data for a 1 degree. During dted level 0 data sampling from dted level 1 data, the maximum and m inimum elevation value s of the points in the cell are recorded with the average.
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. Those products and services that are available to the public can be obtained from the following sources. 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. Access constraints srtm dted level 1 3 arc second data for global coverage is distributed. Citeseerx digital terrain model interpolation for mobile. In the end, i managed to add dted layer using rasterlayer. The digital elevation models dem derived from the srtmxsar data.
Geospatial repository and data management system grid. 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. 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. 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. This edition includes the shuttle radar topography mission \srtm\ dted level 1 and level 2 requirements. The gmted2010 product suite contains seven new raster elevation products for each of the 30, 15, and 7. Military specification digital terrain elevation data dted milprf89020b, and amongst other parameters describes the. A data file of dted level 0 is produced from dted level 1 or vmap 0. Caution the data will be extraced into a new folder called dted its part of the path stored with each file in the zip so be aware that you may end up with path which ends with dted dted, if this happens make sure the dted path in elevation configuration includes both the names example c. I remember about 78 years ago that data was still obtainable but it doesnt appear as though it is. The dted format is intended to be used with one band data that represents elevation, so this tool cannot be used for multiband images.
Level 1 has a post spacing of approximately 90 meters. 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. Vmap level 1 contains medium resolution data at the 1. Level 0 has a post spacing of 30 arc seconds in latitude direction ca. Islands with an axis greater than 600 meters for dted level 1 or 300 meters for dted level 2 must appear in dted. Global multiresolution terrain elevation data 2010. Dted level 2 30m will be available thru the 2000 sts99 shuttle ifsar mission in 2001. Caution the data will be extraced into a new folder called dted its part of the path stored with each file in the zip so be aware that you may end up with path which ends with dteddted, if this happens make sure the dted path in elevation configuration includes both the names example c.
Shuttle radar topography mission dted level 1 3arc second. United states mapping agencies provide terrain elevation data in the form of data grids. For information on locating map data for download over the internet, see the. The dted format for level 0, 1 and 2 is described in u. The 1 kilometer data and some higherresolution data is available online, as are product specifications and documentation. Dted level 2 is a uniform gridded matrix of terrain elevation. Military specification digital terrain elevation data dted milprf89020b, and amongst other parameters describes the resolution for each level.
Dted level 0 was derived from nga dted level 1 to support a federal. Dted supports negative as well as positive elevations so it works in death valley. The edges of adjacent tiles have redundant records. Dted level 1 corresponds to medium scale hardcopy products, and has a post spacing of three arcseconds, or 100 meter nominal resolution. Digital terrain elevation data national geospatial. You can find published specifications for dted at the nga website. The horizontal datum is the world geodetic system 1984 wgs84 and the vertical datum is mean sea level as determined. The shuttle radar topography mission srtm water body data files are a byproduct of the data editing performed by the national geospatialintelligence agency nga to produce the finished srtm digital terrain elevation data level 2 dted 2. The global multiresolution terrain elevation data 2010 gmted2010 provides a new level of detail in global topographic data. Dted level 0 data provides approximately 1km resolution of elevation data which requires smaller storage space. 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. 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 data is available at three different resolutions, which are referred to as level 0, level 1 and level 2.
File formats may be either proprietary or free and may be either unpublished or open. Currently only converts dted1dted2 no longer in development due to personal time constraints. This is the best resolution dted map level that the app can use, with a nominal 30 meter cell spacing. Use the free 21day full working demo to process the file at your location. A file format like dt0 dted level 0 file is a standard way that information is encoded for storage in a computer file. Version 2 is the result of a substantial editing effort by the national geospatialintelligence agency and exhibits welldefined water bodies and coastlines and the absence of spikes and wells singlepixel. Raster to dteddata management toolbox documentation. There are three levels of the dted tiling scheme available. Level 0 covers only about 50% of the area covered by gtopo30, but much of the difference is in antarctica. Used in study to find large flat areas of world as possible places to locate gammaray telescope array. 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.
Dted level 0 elevation post spacing is 30 arc second nominally one kilometer. The digital elevation models dem derived from the srtmxsar data are provided in the dtedformat. File open dt0 dted level 0 file data conversion ai. The input can only be a single band raster dataset. 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. Dted level 0 dted is a uniform matrix of terrain elevation values. The national geospatialintelligence agency nga does not sell or perform services for the public. Dted is a standard of digital datasets which consists of a matrix of terrain elevation values, i. It provides basic quantitative data for all military systems that require terrain elevation, slope, and gross surface roughness information. The maxminavg values are calculated using dted 1 data. Dted level 0 is produced with only full onedegree cells with no voids. Converts digital terrain elevation data from one level to another. 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. Level 0 has a post spacing of approximately 900 meters.
Gesch global land onekm base elevation globe model and. Dted level 0 corresponds to small scale hardcopy products, and has a post spacing of 30. The originating data was dted level 0 downloaded from the nga raster roam page. The dted level 0 accuracy record is copied from the dted level 1 accuracy record or will contain na not available when produced from vmap 0. The points in between the sampled points can be interpolated making use of the interpolation algorithms, with the addition of two sets of extra points whose coordinates are determined according to the existing sample points. Some code to load and process digital terrain elevation data dted files. The files have file names with the extension dtn, where n is the level of the dted product. Simply download that file and extract the contents into your existing v12. Fme is the data integration platform with the best support for spatial. 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. If you download files one at a time, you can get dted or geotiff in addition to bil, but each download takes multiple clicks. Vmap level 0 is the low resolution component of the vmap family of products.
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