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What is SRTM image?
Shuttle Radar Topography Mission (SRTM) data have been enhanced to fill areas of missing data (Void Filled) to provide more complete digital elevation data with a resolution of 1 arc-second (~ 30 meters) and 3 arc-seconds (~ 90 meters) for global coverage. These browse images of Mt.
What is meant by SRTM?
SRTM (Shuttle Radar Topography Mission) is mounted on a Space Shuttle and obtains Earth surface data by remote sensing technology utilizing a synthetic aperture radar. During its 11-day flight, it will obtain data covering 80% of the Earth’s surface (excluding north and south poles), and 95% of its residential area.
What kind of data are captured by NASA’s SRTM project?
The SRTM collected radar data over 80% of the Earth’s land surface between 60° north and 56° south latitude. These data were used to construct a global digital elevation model having elevation postings every 1 arc-second (approximately 30 meters)1.
How is SRTM data collected?
Research grade SRTM (C-band) data are available through NASA JPL. 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.
How often does SRTM collect land surface data?
SRTM successfully collected radar data over 80% of the Earth’s land surface between 60° north and 56° south latitude with data points posted every 1 arc-second (approximately 30 meters). The level of processing and the resolution of the data will vary by SRTM data set.
What is the resolution of SRTM void filled data?
The resolution for SRTM Void Filled data is 1 arc-second for the United States and 3 arc-seconds for global coverage.
Where can I find USGS SRTM void filled data?
USGS Global Visualization Viewer (GloVis) can be used to search, preview, and download SRTM Void Filled data. Research grade C-band SRTM data are available through NASA’s Jet Propulsion Laboratory, and the SRTM/X-SAR data are available through the German Aerospace Center (DLR). No data point selected.
How big is a georeferenced tagged image file?
File size is approximately 7 MB for 1-arc-second data files and approximately 1 MB for 3- arc-second data files. Georeferenced Tagged Image File Format (GeoTIFF) is a TIFF file with embedded geographic information. This is a standard image format for GIS applications.