Srtm data free downloads

The dataset is released in 1 degree tiles. Ocean areas covered by a tile have an elevation of 0m. Open Topo Data will return null for locations not covered by a tile. SRTM coverage green area. Download the files from USGS into. This mission used single-pass interferometry, which acquired two signals at the same time by using two different radar antennas. An antenna located on board the space shuttle collected one data set and the other data set was collected by an antenna located at the end of a meter mast that extended from the shuttle.

Differences between the two signals allowed for the calculation of surface elevation. Endeavour orbited Earth 16 times each day during the day mission, completing orbits. This version was then edited or finished by the NGA to delineate and flatten water bodies, better define coastlines, remove spikes and wells, and fill small voids. Data for regions outside the United States were sampled at 3 arc-seconds approximately 90 meters using a cubic convolution resampling technique for open distribution.

The voids occur in areas where the initial processing did not meet quality specifications. Since SRTM data are one of the most widely used elevation data sources, the NGA filled the voids using interpolation algorithms in conjunction with other sources of elevation data. Some tiles may still contain voids. Users should check the coverage map in EarthExplorer to verify if their area of interest is available. EarthExplorer offers SRTM data with a regularly spaced grid of elevation points in three file formats:.

These data were sampled at 3 arc-seconds using a nearest neighbor resampling technique for global coverage. The German and Italian space agencies operated the X-band hardware and processed the data independently into a separate elevation data set. EE supports the searching of satellite, aircraft, and other remote sensing inventories through interactive and textual-based query capabilities.

However, I just discovered a serious mistake.. WorldDEM is the future. Your email address will not be published. Skip to content. Sure you do. Subscribe to our newsletter:. Thanks, and any advice on this would be greatly appreciated. Thanks for the links!

Hey, which source has latest DEM for Europe? I have tried USGS and the acquisition date is Can any one help me how to generate a good DEM of land and also crop?

I want to download a 10 m resolution DEM for India. Can I get some suggestions for that. This is for version 1 and 2. Leave a Reply Cancel reply Your email address will not be published. The grid resolution is 30 seconds which is roughly one kilometer. Full SRTM1 arc second download. Ask Question Asked 6 years, 1 month ago. Is SRTM 3 second arc free of non-terrain features? Download new SRTM 30 meters. Some tiles may still contain voids.