The next generation of GloVis. Accessibility FOIA Privacy Policies and Notices. U. S. Department of the Interior U. S. Geological Survey. Shuttle Radar Topography Mission Wikipedia. The Shuttle Radar Topography Mission SRTM is an international research effort that obtained digital elevation models on a near global scale from 5. S to 6. 0 N,2 to generate the most complete high resolution digital topographic database of Earth prior to the release of the ASTER GDEM in 2. SRTM consisted of a specially modified radar system that flew on board the Space Shuttle. Endeavour during the 1. Landsat Raw Data Download' title='Landsat Raw Data Download' />STS 9. February 2. Spaceborne Imaging Radar CX band Synthetic Aperture Radar SIR CX SAR, previously used on the Shuttle in 1. To acquire topographic data, the SRTM payload was outfitted with two radar antennas. One antenna was located in the Shuttles payload bay, the other a critical change from the SIR CX SAR, allowing single pass interferometry on the end of a 6. Shuttle was in space. The technique employed is known as interferometric synthetic aperture radar. Intermap Technologies was the prime contractor for processing the interferometric synthetic aperture radar data. The elevation models are arranged into tiles, each covering one degree of latitude and one degree of longitude, named according to their south western corners. For example, n. 45e. N6E to 4. 6N7E and s. S6W to 4. 4S5W. The resolution of the raw data is one arcsecond 3. United States territory. ProcessingLevels-Collections.JPG' alt='Landsat Raw Data Download' title='Landsat Raw Data Download' />A derived one arcsecond dataset with trees and other non terrain features removed covering Australia was made available in November 2. For the rest of the world, only three arcsecond 9. Each one arcsecond tile has 3,6. The dimensions of the three arcsecond tiles are 1. The original SRTM elevations were calculated relative to the WGS8. EGM9. 6 geoid separation values were added to convert to heights relative to the geoid for all the released products. The elevation models derived from the SRTM data are used in geographic information systems. They can be downloaded freely over the Internet, and their file format. The Shuttle Radar Topography Mission is an international project spearheaded by the U. S. National Geospatial Intelligence Agency NGA and the U. Access to geospatial data files. GeoGratis uses the File Transfer Protocol FTP to distribute geospatial data via its website. Below an exhaustive list of GeoGratis. The hackers got their hands on some internal data about the clients Mandiant and its parent company FireEye protect, including the Israeli Defense Forces. Envisat Environmental Satellite is a large inactive Earthobserving satellite which is still in orbit. Operated by the European Space Agency ESA, it was the. Plans For Wood Shelter Shed Plans DIY Free Landsat Data 16x20 Early Texas Prints Ana White Diy Plans Build A Step From Paving Stones. Plans For Wood Shelter How. S. National Aeronautics and Space Administration NASA. NASA transferred the SRTM payload to the Smithsonian National Air and Space Museum in 2. Steven F. Udvar Hazy Center in Chantilly, Virginia. No data areasedit. SRTM void filling with spline interpolation in GRASS GIS. The elevation datasets are affected by mountain and desert no data areas. These amount to no more than 0. They affect all summits over 8,0. Alpine and similar summits and ridges, and many gorges and canyons. There are some SRTM data sources which have filled these data voids, but some of these have used only interpolation from surrounding data, and may therefore be very inaccurate. If the voids are large, or completely cover summit or ridge areas, no interpolation algorithms will give satisfactory results. UX_q1VYcmvpOaUn6MCSOjl72eJkfbmt4t8yenImKBVvK0kTmF0xjctABnaLJIm9' alt='Landsat Raw Data Download' title='Landsat Raw Data Download' />Other developers, including NASA World Wind and Google Earth, have improved their results by using 1 arc second for the United States and 3 arc second for the rest of the world, data in the interpolation process, but, due to the poor resolution of these data, and very poor quality of some of them, they have further improved their earth viewing services by adding data from other sources. Void filled SRTM datasetsedit. Scallop Border For Microsoft Word'>Scallop Border For Microsoft Word. Example of relief map from SRTM1 central NevadaGroups of scientists have worked on algorithms to fill the voids of the original SRTM data. Two datasets offer global coverage void filled SRTM data at full resolution the CGIAR CSI versions8 and the USGS Hydro. SHEDS dataset. 9The CGIAR CSI version 4 provides the best global coverage full resolution SRTM dataset. The Hydro. SHEDS dataset was generated for hydrological applications and is suitable for consistent drainage and water flow information. References are provided1. The void filled SRTM data from Viewfinder Panoramas1. SRTM resolution. Since November 2. In November 2. 01. LP DAAC released1. NASA Shuttle Radar Topography Mission SRTM Version 3. SRTM Plus Product collection with all voids eliminated. Voids were filled primarily from ASTER GDEM2, and secondarily from USGS GMTED2. USGS National Elevation Dataset NED for the United States except Alaska and northernmost Mexico according to the announcement. Highest Resolution Global Releaseedit1 arc second global digital elevation model 3. United States Geological Survey usgs website. Nubble Game For. The United States Government announced on September 2. United Nations Climate Summit that the highest possible resolution of global topographic data derived from the SRTM mission will be released to public. And before the end of the same year, a 1 arc second global digital elevation model 3. Most part of the world has been covered by this dataset ranging from 5. Middle East and North Africa area. Missing coverage of the Middle East was completed in August 2. In early June 2. 01. SRTM topography dataset. Users in 2. 21 countries have accessed the site. See alsoeditShuttle Radar Topography Mission Mission to Map the World. Retrieved 2. 00. 9 0. Nikolakopoulos 2. SRTM derived 1 Second Digital Elevation Models Version 1. Nikolakopoulos 2. Hirt, C. Filmer, M. S. Featherstone, W. E. 2. 01. 0. Comparison and validation of recent freely available ASTER GDEM ver. SRTM ver. 4. 1 and GEODATA DEM 9. S ver. 3 digital elevation models over Australia. Australian Journal of Earth Sciences. Bibcode 2. 01. 0Au. JES. 5. 7. 3. 37. H. doi 1. 0. 1. 08. Retrieved May 5, 2. CannisterMast, Shuttle Radar Topography Mission Payload. Smithsonian National Air and Space Museum. Retrieved 2. 4 July 2. Reuter H. I, A. Nelson, A. Jarvis, 2. 00. 7, An evaluation of void filling interpolation methods for SRTM data, International Journal of Geographic Information Science, 2. Version 2 still contains data voids some 8. Earths 5. 11. 08 km2 surfaceSRTM 9. Digital Elevation Data. Consultative Group on International Agricultural Research. August 2. 00. 8. Retrieved 1. October 2. 01. 4. USGS Hydro. SHEDS. United States Geological Survey. September 2. 01. 0. Retrieved 1. 0 October 2. USGS Hydro. SHEDS References. United States Geological Survey. September 2. 01. 0. Retrieved 1. 0 October 2. DIGITAL ELEVATION DATA. Viewfinder Panoramas. Retrieved 1. 0 October 2. NASA Shuttle Radar Topography Mission SRTM Version 3. SRTM Plus Product Release. United States Geological Survey. April 2. 01. 4. Retrieved 1. October 2. 01. 4. Survey, USGS U. S. Geological. Earth. Explorer. earthexplorer. U. S. Releases Enhanced Shuttle Land Elevation Data. JPL Shuttle Radar Topography Mission. Retrieved 3. 1 January 2. USGS Earth Explorer. USGS Earth. Explorer. Retrieved 3. 1 January 2. NASA Shuttle Radar Topography Mission SRTM Global 1 arc second Data Released Over the Middle East LP DAAC  NASA Land Data Products and Services. ReferenceseditNikolakopoulos, K. G. Kamaratakis, E. K Chrysoulakis, N. November 2. 00. 6. SRTM vs ASTER elevation products. Comparison for two regions in Crete, GreecePDF. International Journal of Remote Sensing. ISSN 0. 14. 3 1. Archived from the originalPDF on July 2. Retrieved March 1. Wii Ticket Code. Farr, Tom G. Rosen, Paul A. Caro, Edward Crippen, Robert Duren, Riley Hensley, Scott Kobrick, Michael Paller, Mimi Rodriguez, Ernesto Roth, Ladislav Seal, David Shaffer, Scott Shimada, Joanne Umland, Jeffrey Werner, Marian Oskin, Michael Burbank, Douglas Alsdorf, Douglas 2. The Shuttle Radar Topography Mission.