What is the resolution of SRTM elevation data?

What is the resolution of SRTM elevation data?

Please note that tiles above 50° north and below 50° south latitude are sampled at a resolution of 2 arc-second by 1 arc-second. EarthExplorer offers SRTM data with a regularly spaced grid of elevation points in three file formats:

When was the shuttle radar topography mission ( SRTM ) flown?

SRTM data have been enhanced to fill areas of missing data to provide digital elevation data with a resolution of 1 arc-second for global coverage. The Shuttle Radar Topography Mission (SRTM) was flown aboard the space shuttle Endeavour February 11-22, 2000.

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.

How is interferometric radar used in SRTM mission?

The technology was modified for the SRTM mission to collect interferometric radar, which compared two radar images or signals taken at slightly different angles. This mission used single-pass interferometry, which acquired two signals at the same time by using two different radar antennas.

How to calculate the Dem of a latitude grid?

To do this with a grid given in decimal degrees (such as an SRTM DEM), perform the following steps: Create a latitude grid. (This is just the y-coordinate grid.) Compute its cosine. Project both the DEM and the cosine of the latitude using a Mercator projection in which scale is true at the Equator.

How to calculate slope and hillshade using SRTM?

Now that SRTM data are globally available I can actually see and work with the files. The gdaldem utility from GDAL can compute slope and hillshade using a scale option for a ratio of vertical units to horizontal. The manual recommends 111120 m/° for something like SRTM tiles.

Where are the elevation data from the shuttle?

SRTM Non-Void Filled (Digital Object Identifier (DOI) number: /10.5066/F7K072R7) elevation data were processed from raw C-band radar signals spaced at intervals of 1 arc-second (approximately 30 meters) at NASA’s Jet Propulsion Laboratory (JPL).

Can you convert SRTM data to Cartesian coordinates?

This person is not on ResearchGate, or hasn’t claimed this research yet. SRTM Elevation data is available in WGS coordinate system with latitudes and longitudes. Converting SRTM data into Cartesian coordinates requires many operations in any raster GIS.