Where is SRTM data?
SRTM V2 Released The data may be obtained through this URL: http://dds.cr.usgs.gov/srtm/ and go to the directory where both version 1 and version 2 directories may be found.
Is SRTM a Dem?
The Shuttle Radar Topography Mission (SRTM) provides for the first time a near-global high-resolution digital elevation model (DEM) with great advantages of homogeneous quality and free availability.
How is SRTM data collected?
The Shuttle Radar Topography Mission (SRTM) was flown aboard the space shuttle Endeavour February 11-22, 2000. 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 60-meter mast that extended from the shuttle.
What is SRTM30?
SRTM30 is a near-global digital elevation model (DEM) comprising a combination of data from the Shuttle Radar Topography Mission, flown in February, 2000 and the the U.S. Geological Survey’s GTOPO30 data set. Synthetic aperture radars are side-looking instruments and acquire data along continuous swaths.
How accurate is SRTM data?
The Shuttle Radar Topography Mission (SRTM) Digital Terrain Elevation Data (DTED) are used with the consensus view that it has a minimum vertical accuracy of 16 m absolute error at 90% confidence (Root Mean Square Error (RMSE) of 9.73 m) world-wide.
How can I download NASA SRTM data?
The data may be obtained through this URL: http://dds.cr.usgs.gov/srtm/ Go to the directory where both version 1 and version 2 directories may be found. Please read the appropriate documentation, also found in the directories.
Is SRTM DEM or DTM?
For the associated built up areas the SRTM DSM dataset is in average about 2.5 meters higher than the official DTM for the Cologne Region and the Ruhr Basin….2. SRTM Digital Terrain Model (DTM) Processing.
| Forest Type | Mean Value | Standard Deviation |
|---|---|---|
| Deciduous | 8.09 | 6.24 |
| Coniferous | 10.49 | 6.59 |
| Mixed | 10.13 | 6.93 |
What does SRTM stand for?
Summary. 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.
Is LiDAR a SRTM?
Its remarkable fine spatial resolution made it become one of the most frequently used DEM products. Light detection and ranging (LiDAR), an active remote sensing technique, provides the opportunity to evaluate the accuracy of the SRTM DEM over vegetated mountain areas.
How accurate are elevations in Google Earth?
The GDEM data are the most widely covered elevation data source (from 83°N to 83°S, covering about 99% the globe) with a grid resolution of 30 meters. A vertical accuracy study found the root mean square error (RMSE) of GDEM data is 8.68 meters when compared against 18,000 geodetic control points in the USA [14].
How accurate is USGS elevation data?
The overall absolute vertical accuracy calculated for the NED is 2.44 meters (RMSE), whereas the assessment of the SRTM showed an accuracy of 3.53 meters (RMSE). The assessment included examination of the accuracy as a function of specific terrain conditions.
What is 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.