Radio mobile rf propagation simulation software dted. Youll sometimes here dted 1 referred to as 3 arc second dted and dted 2 referred to as 1 arc second dted. Digital terrain elevation data national geospatial. Milprf89020b not 1 digital terrain elevation data dted. The aster gdem v3 maintains the geotiff format and the same gridding and tile structure as v1 and v2, with 30meter postings and 1 x 1 degree tiles. Im kind of in an odd situation and need dted level 0 data but it looks like the nga raster roam site is down. Military specification digital terrain elevation data dted milprf89020b, and amongst other parameters describes the resolution for each level. The refined production algorithm provides improved spatial resolution, increased horizontal and vertical accuracy. Dted level 1 is a uniform matrix of terrain elevation values with post spacing every 3. Dted level 1 corresponds to medium scale hardcopy products, and has a post spacing of three arcseconds, or 100 meter nominal resolution.
Although no standards exist, the defacto resolution for level 3 dted is a 1 3rd arc second 10 meter, level 4 is 1 9th arc second 3 meter and level 5 dted is 1 27th arc second 1 meter. Purpose this document provides a description of the content, format and accuracy specifications of the shuttle radar topography mission water body data swbd. It contains code for sorting dted files and creating 3d scenes via the rez code base. The conversion process includes interpolating the 12011201 grid of elevation data to 360601, which is the standard for level 2 dted data, then adjusting the header information accordingly. I cant select all the zctas in my state at the moment to download some of the new 5year estimates. This interface attempts to ease the pain of downloading 30meter resolution elevation data from the shuttle radar topography mission click on yellow tiles to download their corresponding data.
Elevation height data sources for oziexplorer3d software. On september 23, 2014, the white house announced that the highestresolution topographic data generated from nasas shuttle radar topography mission srtm in 2000 was to be released globally by late 2015. Turn practically any file into a digital terrain elevation data raster, or conversely, convert dted files into hundreds of other formats using fme. Version 3 shows significant improvements over the previous release. I remember about 78 years ago that data was still obtainable but it doesnt appear as though it is. I know strm lv 1 has been release ages ago and available to public, done some digging but cannot find any dted to download for elevation tool use. Geological survey, no warranty, expressed or implied, is made by either regarding the utility of the data on any system, nor shall the. Dted level 1 is a uniform matrix of terrain elevation values with post spacing every 3 arc seconds approximately 100 meters. The dted format is intended to be used with one band data that represents elevation, so this tool cannot be used for multiband images. Access constraints srtm dted level 1 3 arc second data for global coverage is distributed. 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. 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. Jan 20, 2020 the dted format for level 0, 1 and 2 is described in u.
Oziexplorer 3d sources of digital height data ozi home ozi3d home. 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. The gmted2010 product suite contains seven new raster elevation products for each of the 30, 15, and 7. Shuttle radar topography mission dted level 1 3arc. Dted digital terrain elevation data this is a format specification with specific aspects about resolution and accuracy of elevation data, defined by the nga national geospatial intelligence agency. The following table provides a list of products available through the geospatial engine for public download. National geospatial intelligence agency nga, formerly the national imagery and mapping agency. Earth resources observation and science eros center.
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. Apr 15, 2020 1 meter digital elevation models dems usgs national map 3dep downloadable data collection metadata updated. Fmes data conversion capabilities enable you to move files between the dted standard and any of the hundreds of formats it supports including. Geological survey usgs and provide coverage in 1 by 1 degree blocks with approximately 90 by 90 meter resolution for all of the contiguous united states, hawaii, and limited portions of alaska. You can still get dted and onc and other data but the 10m satellite imagery is not available at the time of this writing. If your oziexplorer does not have a nima dted path then you need to download a later version. April 15, 2020 this is a tiled collection of the 3d elevation program 3dep and is one meter resolution.
Shuttle radar topography mission dted level 1 3arc second data dted 1 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 aim of this paper is to examine the vertical accuracy of the srtm dted 1. Free digital elevation model dem and free satellite data download links. Dted level 1 is the basic medium resolution elevation data source for all military activities and systems that require landform, slope, elevation andor terrain roughness in a digital format. Raster to dteddata management toolbox documentation. Because of the greater density, a dted 1 file is 100 times the size of a dted 0 file and a dted 2 file is 9 times the size of a dted 1 file. If you are looking for free dem, use the srtm dted1see cgiar or on. Digital terrain elevation data dted map and data library. This edition includes the shuttle radar topography mission \srtm\ dted level 1 and level 2 requirements. This addon will convert any dted file into a landserf.
Note the dted data is stored in numerous folders, a separate folder for each 1 degree of longitude. Performance specification digital terrain elevation data dted this specification is approved for use by all departments and agencies of the department of defense. Dted level 2 corresponds to medium to large scale hardcopy products, and has a post spacing of one arcsecond, or 30 meter nominal resolution. In accordance with the dted 2 specification, the terrain elevation data have. Nrcs is a member agency of the national digital elevation program. The 3dep data holdings serve as the elevation layer of the national map, and provide foundational elevation information for earth.
The lowest resolution data is available to the public. This script is only a quick hack and i cant give any warranties. The data is available as 1 by 1 degree quadrangles at horizontal resolutions ranging from about 1 kilometer to 1 meter. Dted files arent compressed so a file of empty ocean is just as large as one in the middle of one in the rocky mountains. Level 1 has a post spacing of approximately 90 meters. This interface attempts to ease the pain of downloading 30meter resolution elevation data from the shuttle radar topography mission click on yellow tiles to download their corresponding data tiles come as zipped srtmhgt files at 1 arcsecond resolution 3601x3601 pixels in a latitudelongitude projection, downloaded from nasa servers. Milprf89020b not 1 digital terrain elevation data dted this specification defines the requirements within national imagery and mapping agencys nima digital terrain elevation data base which supports various weapon and training systems. The red dots are included in dted 1 and dted 2 files and the values they return instead i used the usgs national elevation database ned downloaded. Dted files digital terrain elevation data what it is. Height data from these sites or data files in the same formats are supported. Digital terrain elevation data dted dted is a uniform matrix of terrain elevation values and provides basic quantitative data for systems and applications that require terrain elevation, slope, and gross surface roughness information.
The output pixel size is dictated by the dted level, and the data is converted and stored as signed, 16bit integers. Usgs eros archive digital elevation shuttle radar topography. Because of the known limitations and problems with the existing dted specification the higher resolution data is often called highresolution terrain. In the end, i managed to add dted layer using rasterlayer. Digital elevation modeling and mapping digital elevation model. The national geospatialintelligence agency nga does not sell or perform services for the public.
Access digital elevation data about australias landforms and seabed, which is crucial for addressing the impacts of climate change, disaster management, water security, environmental management, urban planning and infrastructure design. Add dted data to a map layer geonet, the esri community. The dted format for level 0, 1 and 2 is described in u. Level 0 has a post spacing of 30 arc seconds in latitude direction ca. Digital terrain elevation data dted dted is a uniform matrix of terrain elevation values. When your profile is built, download to a folder on your computer. Converts digital terrain elevation data from one level to. This is the best resolution dted map level that the app can use, with a nominal 30 meter cell spacing. If you download files one at a time, you can get dted or geotiff in. Shuttle radar topography mission dted level 1 3arc second data dted1. The geospatial engine now provides access to imagery of the earth, maps and other geospatial information produced by the national imagery and mapping agency. Dted data is available at three different resolutions, which are referred to as level 0, level 1 and level 2. This specification defines the requirements within national imagery and mapping agencys nima digital terrain elevation data.
Free digital elevation model dem and free satellite data. Download dted 2 book 1 almost free books world public library. One is digital elevation data, in a series called dted, for defense digital terrain elevation data. Level 1 data are spaced at 3 arcseconds approximately 90m and level 2 data are spaced at 1 arcsecond approximately 30m intervals. 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. Dted level 1 is the basic medium resolution elevation data source for all military activities and systems that require landform, slope, elevation, andor gross terrain. Shuttle radar topography mission dted level 1 3arc second.
Dted converter currently only supports the conversion of data from dted level 1 to dted level 2. Used in study to find large flat areas of world as possible places to locate gammaray telescope array. The dted level 0 data is relatively small, and is often published as a. Bookmark url global change master directory gcmd nasa. High quality digital elevation data will support the agency business activities by improving employee effectiveness and efficiency in providing assistance to our customers through the use of digital elevation models dem, hillshade, slope, and contour map and data products. The digital elevation models dem derived from the srtmxsar data are provided in the dtedformat. It also contains codes for manipulating large imagery.
Dted files digital terrain elevation data what it is a dted level 1 and 2 are not releasable outside dod unless specifically authorized by the hq nima. A dted file is a matrix of elevation values for a one degree by one degree area. National geospatial intelligence agency nga, formerly the national imagery and mapping agency nima, and before that, the defense mapping agency dma. If you download files one at a time, you can get dted or geotiff in addition to bil, but each download takes multiple clicks. We use the acronym dted generically to describe terrain data, but really dted is one specification and a pretty dated on at that.
Free satellite data, satellite imagery, digital elevation models dems, topographic maps and free software links. Dted products are produced at three levels of resolution described below. Some code to load and process digital terrain elevation data dted files. Converts digital terrain elevation data from one level to another. The digital terrain elevation data dted model is a series of gridded elevation models with global coverage at resolutions of 1 kilometer or finer. Each dted file contains elevation data for a 1 degree latitude by 1 degree longitude cell. The dma later changed its name to national imagery and mapping agency nima but is now called the national geospatial intelligence agency nga. 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. The global multiresolution terrain elevation data 2010 gmted2010 provides a new level of detail in global topographic data. Vertical accuracy of the srtm dted level 1 of crete. Dted level i is the basic medium resolution elevation data source for all military activities and systems that require landform, slope, elevation, andor gross terrain roughness in a digital format.
Those products and services that are available to the public can be obtained from the following sources. It provides basic quantitative data for all military systems that require terrain elevation, slope and gross surface roughness information. Although these data have been processed successfully on a computer system at the u. Several folders will be created organizing the profile by longitude, for example e031 means 31 degrees east longitude now you are ready to merge the data. Additionally, srtm is a sidelooking instrument consisting of the modified spaceborne imaging radarc sirc hardware that acquires data along continuous swaths that were about 225 km wide farr and kobrick, 2000. Basis of this document is the performance specification digital terrain elevation data dted. Ns dted 0 has a grid spacing of 30 seconds, dted 1 has a grid spacing of 3 seconds and dted 2 has a grid spacing of 1 second. The dted format data will generally perform adequately. The level is indicated by the metadata within the file as well as the file name extension. Level 0 has a post spacing of approximately 900 meters. The dpdw ingests the srtm data products, checks them for formatting errors, loads the srtm dted into the nga data. Geological survey usgs and the national geospatialintelligence agency nga 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.
1616 693 1346 955 943 240 478 556 1241 1412 651 703 1024 538 1049 712 1198 350 104 643 263 688 244 331 1456 519 772 1456 938 982 952 397 217 1029