Each tile of thisĭataset contains 1201x1201 samples which is equipollent to a 90 m grid resolution at equator. A degree of latitude measuresġ11 kilometers North South, a degree of longitude measures 111 kilometers East West or less, decreasing away from the equator. SRTM data was processed into geographic tiles, each of which represents one by one degree of latitude and longitude. SRTM flew on board the Space Shuttle Endeavour in February 2000 and used an interferometric radar system to map the topography of Earth's surface.Įndeavour was launched in an orbit with an inclination of 57 degrees which allowed to map all of the Earth's landmass that lies between 60 degrees Department of Defense (DoD), and the German and Italian space agencies. Geospatial-Intelligence Agency (NGA) of the U.S. The mission was a cooperative project between the National Aeronautics and Space Administration (NASA), the National SRTM (Shuttle Radar Topography Mission) was developed to collect three-dimensional measurements of the Earth's surface to generate a near-globalĭigital elevation model (DEM). Although not required, a link to is appreciated. Without attributing the original author or source. You are free to adapt and use the relief maps and relief layer for commercial purposes MFF-maps are released under Creative Commons CC0. The vision of Maps-For-Free is to offer free worldwide relief maps and other layers which can easily be integrated into existing map projects.

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