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.
How to fill hole in dem using ArcGIS Desktop?
Additionnal contraint could be added based on the “group” values in order to avoid filling the “true” NoData outside of the area were the DEM has been produced. Thanks for contributing an answer to Geographic Information Systems Stack Exchange!
Is there a void fill function in ArcMap?
There is a elevation void raster function in arcmap. This function uses the Plane Fitting/IDW void fill method. First a basic method is used, where the average of the eight neighboring values are calculated to fill small voids, then the plane fitting method is applied.
What are voids in USGS digital elevation data?
SRTM Void Filled (Digital Object Identifier (DOI) number: /10.5066/F7F76B1X) elevation data are the result of additional processing to address areas of missing data or voids in the SRTM Non-Void Filled collection. The voids occur in areas where the initial processing did not meet quality specifications.
When did the USGS release the SRTM data?
This coincides with the newly processed areas released by the United States Geological Survey ( USGS) on January 2, 2015 available through EarthExplorer . SRTM obtained elevation data on a near-global scale using radar interferometry.
What is version 3.0 of SRTM global 1?
Version 3.0 SRTM Global 1 arc second product is void-filled using elevation data from Advanced Spaceborne Thermal Emission and Reflection Radiometer ( ASTER) Global Digital Elevation Model 2 ( GDEM2 ), USGS Global Multi-resolution Terrain Elevation Data ( GMTED) 2010, and USGS National Elevation Dataset ( NED ).
What does srtmgl1 elevation file in DAAC mean?
Each SRTMGL1 data tile contains a mosaic and blending of elevations generated by averaging all “data takes” that fall within that tile. These elevation files use the extension “.HGT”, meaning height (such as N37W105.SRTMGL1.HGT).