Flown on a space shuttle mission during 2000, srtm elevation data covers our globe from 60 degrees north to 56 degrees south and was previously only. After opening qgis, we first need to extract the downloaded file, and import the. Place the srtm data in to the dem\srtm folder in your railworks folder you will need to make the folders yourself, as i show in the movie. To download srtm elevation data, firstly we have to define a location extent. The shuttle radar topography mission srtm wikipedia article is a nasa mission conducted in 2000 to obtain elevation data for most of the world. Train simulator 2015 tutorial route building importing. Note the edges of the srtm files and ensure that they cover the area of. The data are available for download and can be used in surfer. Srtm hgt raster in arcgis 10 how to convert geonet. It then unzips the files and stores them in a cache directory, so that it doesnt have to download the same tiles the next time it needs them. The proxy settings have been set, that allows display of the map, but alternative request are blocked those for srtm data download. Srtm is a valuable data that is available for free the paid version also available with more up to date version. It connects to the nasa ftp server and downloads the zipped tiles which it needs to process your request.
The srtm swaths extended from about 30 degrees offnadir to about 58 degrees offnadir from. Click on the srtm30 tile to download the digital elevation map dem from the place you select. In the pathloss program click configure terrain database and select srtm from the drop down list. What do the letters and numbers refer to, and what is. Sep 08, 2015 place the srtm data in to the dem\ srtm folder in your railworks folder you will need to make the folders yourself, as i show in the movie. The shuttle radar topography mission srtm data products result from a collaborative mission by the national aeronautics and space administration nasa, the national imagery and mapping agency nima, the german space agency dlr and italian space agency asi, to generate a nearglobal digital elevation model dem of. Srtm is probably of better quality than the aster gdem, but lower. You can do it manually or simply just add a data into qgis map canvas. 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 1arcsecond resolution 3601x3601 pixels in a latitudelongitude projection, downloaded from nasa servers. Importing shuttle radar topography mission srtm elevation data.
Any download policies of the respective mirrors apply. The files are downloaded which cover the region of the map currently being viewed on the screen. This option will download the srtm shuttle radar topography mission height data. Idea generally focused on better downloading of hgt files is already ready for voting here. Note that the shift and control keys can be used to select multiple tiles. Hgt importdownloadnasasrtmdatafileshgt, matlab central file exchange. For creating elevation maps i have used downloaded srtm dem files in 3dem of usgs, converted to utm projection and converted them to xyz using the freeware dm2win converter in the desired format. The data is published for download here, but its sliced into thousands of small files, and i dont see an ftp option for more efficient downloading.
For example, in this case i added a world satellite imagery image from esri web map server. The shuttle radar topography mission srtm data products result from a collaborative mission by the national aeronautics and space administration nasa, the national imagery and mapping agency nima, the german space agency dlr and italian space agency asi, to generate a nearglobal digital elevation. The tiles are distributed as zip files containing hgt files labeled with the coordinate. Our goal is to help you understand what a file with a. It is the current dataset of choice for digital elevation model dem data since it has a fairly high resolution 1 arcsecond, or around 25 meters, has nearglobal coverage from 56s to 60n, and is in the public domain. Menu options calculate map window corners and analyze header provide the information you need for the. The national aeronautics and space administration nasa.
Converter also supports more than 90 others vector and rasters giscad formats and more than 3 000 coordinate reference systems. One click download and import of openstreetmap and terrain for blender. 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. Thank you for reading this how to open srtm file on qgis tutorial. Hgt importdownloadnasasrtmdatafileshgt, matlab central file. Hgt height files contain elevation data for regions of the earths surface, as acquired by the shuttle radar topography mission strm. The solution for le would be a manual download of srtm data and osm data, followed by off line procesding with maperitive. The srtm elevation data file type, file format description, and windows and linux programs listed on this page have been individually researched and verified by the fileinfo team. Click setup primary or secondary depending on your selection.
Importing srtm data into microdem mesh scenery design. Each data file covers a onedegreeoflatitude by onedegreeoflongitude block of earths surface. Once opened, use file save dem md dem to save it in the format required for mdem2bsq. Currently it works on linux and windows 32 bit vista tested. Click file then bilhdrblw and browse to find and load a file with the hgt extension. The shuttle radar topography mission is a collaborative project between nasa, the national imagery and mapping agency nima, and the german and italian space agencies to map the elevation of a large part of the globe.
Synthetic aperture radars are sidelooking instruments and acquire data along continuous swaths. I have found older 8 yrs threads about needing to rename the file extension of the. Click open and the files will be added to the index list. 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. Is this still the process for using srtm data in arcmap. The wonderful srtm project has the potential to provide global elevation data at up to 30m 1 arcsecond resolution, worldwide. Each file describes a tile with a height of one degree of latitude and a width of one degree of longitude. Click on yellow tiles to download their corresponding data. The shuttle radar topography mission srtm is a tremendous resource because of its high accuracy and its consistency as a snapshot of earths surface, acquired over just 10 days during february 2000. Start 3dem, click on file and select load terrain model, then check the srtm data button.
We strive for 100% accuracy and only publish information about file formats that we have tested and validated. Nasa has released version 2 of the shuttle radar topography mission digital topographic data also known as the finished version. For realistic rendering, images generated from these should be reprojected to utm or polar. The location of the region for data contained in a file is described by the name of the file itself. Uses openstreetmap tiles or public sattelite imagery as background. The program is now setup to use the selected srtm file. However, since your reply to my comment clarifies you are writing your own program to read elevation values from the. The srtm hgt driver currently supports the reading of srtm3 and srtm1 v2 hgt files. Elevation profiles are taken from nasa 1 degree srtm 3 arcsec elevation files. Srtm data, in hgt format, can be downloaded from here, but for some. Srtm mission can be found in farr and kobrick 2000. We can visualize and presented the srtm data into various types. Digital elevation data with srtm voids filled using.
In the menu of the new window click files,import index and srtm hgt files. Version 2 is the result of a substantial editing effort by the national geospatial intelligence agency and exhibits welldefined water bodies and coastlines and the absence of spikes and wells single pixel errors. Microdem can read these zip files directly using file open dem. The shuttle radar topography mission srtm was flown aboard the space shuttle endeavour february 1122, 2000. Shuttle radar topography mission data were used to generate digital elevation data with a resolution of 1 arcsecond for the united states and 3 arcseconds for global coverage. The data could be downloaded under the open database license the data could be visualised in 3d with the virtual terrain software srtm digital terrain model of germany. Srtm was a specially designed mission of the endeavour space shuttle, with a specially built sensor antenna, and aimed to map the earths land.
Srtm3 files contain a sequence of bigendian integer values. Top 4 download periodically updates software information of srtm full versions from the publishers, but some information may be slightly outofdate using warez version, crack, warez passwords, patches, serial numbers, registration codes, key generator, pirate key, keymaker or keygen for srtm license key is illegal. Contour map shows contour lines with relative space indicating the relative slope of the surface. Browse to locate the hgt files you have downloaded you can select many hgt files at once by holding ctrl or shift while selecting files. By early 2004, 3 data for north america, south america, eurasia, africa, australia, and islands was available. Height data from these sites or data files in the same formats are supported. The collections are located under the digital elevation category below the srtm subcategory. Use srtm bil or hgt data in surfer golden software support. Dec 03, 2014 once downloaded we get the four files. You will have world satellite imagery as in figure 2.
Importing srtm data into microdem mesh scenery design how. Srtm or directly from their ftp site files are named according to latitude and longitude. It is also possible to get the raw format grids, hgt files, but these require a bit more involved processing, so we here proceed with the geotiffs. Free sample srtm shuttle radar topography mission back description. See this tutorial how to add satellite imagery in qgis. Hgt files for the whole world can now be downloaded from this site. No source other than 200m nsidc has been used to create them, so their true resolution is not 3. On september 23, 2014, the white house announced the coming availability of a nearglobal 30meter m version of the widely utilized elevation dataset, the shuttle radar topography mission srtm. You can get some higher definition srtm1 data for the. The files to download are listed and the total number of files to be downloaded is shown above the list. If you download files one at a time, you can get dted or geotiff in. Digital elevation data with srtm voids filled using accurate. Here we will open dem in qgis and create the contour map. The files are provided in hgt format for consistency with srtm data.
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