Level 1 has a post spacing of approximately 90 meters. The vmap level 2 program is designed to provide vectorbased geospatial data at high resolution. For information on locating map data for download over the internet, see the. Level 2 dted files have a minimum resolution of 1 arcsecond near the. 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. Jan 20, 2020 the dted format for level 0, 1 and 2 is described in u. Elevation data digital elevation models l3harris geospatial. Usgs eros archive digital elevation shuttle radar topography. It consists of geographic, attribute, and textual data stored on cdroms. I remember about 78 years ago that data was still obtainable but it doesnt appear as though it is.
Dted level 2 corresponds to medium to large scale hardcopy products, and has a post. Nga products can be downloaded using the geoint delivery platform gdp and the. Geodata 9 second dem and d8 flow direction grid 2008 version 3. Im kind of in an odd situation and need dted level 0 data but it looks like the nga raster roam site is down.
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 digital elevation models dem derived from the srtmxsar data are provided in the dtedformat. Dted level 2 partial cells will contain null elevations. Wgs 84 is the horizontal datum and mean sea level is the vertical datum jeddah 1969. You can find published specifications for dted at the nga website. Maps extend a half a cell outside the requested map limits. The global multiresolution terrain elevation data 2010 gmted2010 provides a new level of detail in global topographic data. Army topographic command usatc, and 3 before september 1968 by the army map service ams. Add dted data to a map layer geonet, the esri community. Digital stock numbers can be obtained via the nga reference number national stock number nrnnsn download page. The gmted2010 product suite contains seven new raster elevation products for each of the 30, 15, and 7. To the best of our knowledge, no dted level 3 or higher has been produced in the nga dted format. The files have file names with the extension dtn, where n is the level of the dted product. 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.
Dted level 1 100m post spacings 1,442,401 data points. Srtm dted1 is a uniform matrix of elevation values spaced 3 apart srtm dted, 2004. They will be automatically used when subsampling elevation data on export like from dted2 to dted0. Radio mobile rf propagation simulation software dted.
Dted files come in different levels depending on the resolution of the data. The 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. Vmap level 1 contains medium resolution data at the 1. This new elevation data called global multiresolution terrain elevation data 2010 gmted2010, replaces the thirty year old gtopo30 terrain model. Other higher resolution data called level 1 and level 2 is not available to public but can be used in oziexplorer if you have it by making sure the dted path name ends in a 1 or a 2 example \dted1 depending on the level you are using. National geospatial intelligence agency nga of the u. It is unclear what file sizes will be used for that data. Dted supports negative as well as positive elevations so it works in death valley. In accordance with the dted 2 specification, the terrain elevation data have been edited to. 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. Simply download that file and extract the contents into your existing v12. The elevation data are with respect to the reflective surface, which may be vegetation, manmade.
The 1 kilometer data and some higherresolution data is available online, as are product specifications and documentation. Nima has two methods of recording terrain elevation data depending on the. Nga will acquire new level 2 data as a result of the shuttle radar topography mission srtm. The digital elevation models dem derived from the srtmxsar data. The dted format for level 0, 1 and 2 is described in u. There are three levels of the dted tiling scheme available. The digital elevation model dem 25 metre grid of australia derived from lidar model represents a national 25 metre bare earth dem which has been derived from some 236 individual lidar surveys between 2001 and 2015 covering an area in excess of 245,000 square kilometres. Shuttle radar topography mission dted level 1 3arc. Military specification digital terrain elevation data dted milprf89020b, and amongst other parameters describes the resolution for each level. Some code to load and process digital terrain elevation data dted files. Although nga has only published standards for level 1 3 arc second 90 meter and level 2 1 arc second 30 meter dted, theres strong interest in higher resolution terrain data.
This is the best resolution dted map level that the app can use, with a nominal 30 meter cell spacing. Dted level 2 elevation values are spaced one arc second apart between 0 degrees and 50 degrees latitude, and spaced one arc second apart in latitude and two arc seconds apart in longitude between 50 degrees and 60 degrees. Level 0 files contain elevation data spaced at 30 arcsecond intervals approximately 1km. Dted2 was then aggregated into 3 arcsecond dted1 data. Digital terrain elevation data national geospatial. Srtm dted level 2 1 arc second data for the united states and territotial slands is distributed. Dted level 2 is a uniform gridded matrix of terrain elevation values with post spacing of one arc second approximately 30 meters. Open dt2 file dted digital terrain elevation data level 2. Level 0 has a post spacing of approximately 900 meters. Data are separated into 10 thematic layers consistent throughout the vmap program. 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.
Use the free 21day full working demo to process the file at your location. 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. Shuttle radar topography mission dted level 1 3arc second. The edges of adjacent tiles have redundant records. All finishing steps were performed at the original 1 arcsecond resolution, resulting in dted level 2 data products. The dted format is intended to be used with one band data that represents elevation, so this tool cannot be used for multiband images. United states mapping agencies provide terrain elevation data in the form of data grids. Army topographic command usatc, and 3 before september 1968 by the army map service ams, which. Vertical accuracy of the srtm dted level 1 of crete.
Level 0 has a post spacing of 30 arc seconds in latitude direction ca. Depending on how reasonably the decisions are made on these higher resolution data sets, they may or may not work in md without modifying the source code. 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. Fme is the data integration platform with the best support for spatial.
Level 1 and 2 are not releasable outside dod unless specifically authorized by the. Dted level 2 is the basic high resolution elevation data source for all military activities and systems that require landform, slope, elevation, andor terrain. Load into world builderworld engine and have it export as tiled assets for unreal to read. Dted level 1 corresponds to medium scale hardcopy products, and has a post spacing of three arcseconds, or 100 meter nominal resolution. This edition includes the shuttle radar topography mission \srtm\ dted level 1 and level 2 requirements. Geospatial repository and data management system grid. 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 tr8350. 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. Primary reference citation for all data from this source primary reference citation for dted level 0 dted is a raster topographic data base provided by nima and its predecessors.
Cib has a ground sample distance gsd of 1 meter resolution and is orthorectified using nga digital terrain elevation data level 2 dted level 2. Dted file extension the low cost mapworks surfaces addon running inside civil3d will read nga digital terrain elev data level 02. Smaller islands with a vertical relief of at least 15 meters must also be included. The controlled image base cib is a seamless database of digital orthomosaic images. The input can only be a single band raster dataset. Nov 30, 2011 this new elevation data called global multiresolution terrain elevation data 2010 gmted2010, replaces the thirty year old gtopo30 terrain model. In accordance with the dted 2 specification, the terrain elevation data have. Data is separated into ten thematic layers consistent throughout the vmap program. The elevation data are with respect to the reflective surface, which may be vegetation, manmade features or bare earth. Used in study to find large flat areas of world as possible places to locate gammaray telescope array. The output pixel size is dictated by the dted level, and the data is converted and stored as signed, 16bit integers. 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.
Dted level 2 corresponds to medium to large scale hardcopy products, and has a post spacing of one arcsecond, or 30 meter nominal resolution. Dted level 2 cdroms are produced with partial onedegree cells with voids. Level 1 data are spaced at 3 arcseconds approximately 90m and level 2 data are spaced at 1 arcsecond approximately 30m intervals. Gmted2010 is a suite of seven raster data products. Click on the link to get more information about listed programs for view dt2 file action. Gesch global land onekm base elevation globe model and. In the end, i managed to add dted layer using rasterlayer. The lowest resolution data is the dted level 0, with a grid spacing of 30 arcseconds, or about 1 kilometer. Exporting dted level 2 to dted level 0 global mapper forum.
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. Unlike srtm3, however, dted1 has been generated by subsampling, i. Dted level 2 partial onedegree cells with voids can be downloaded from the nima gateway. Global multiresolution terrain elevation data 2010. Cib started as a product called arc digital raster image adri. Islands with an axis greater than 600 meters for dted level 1 or 300 meters for dted level 2 must appear in dted. Raster to dteddata management toolbox documentation.