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Accuracy and resolution of shuttle radar topography mission data
Author(s) -
Smith Bridget,
Sandwell David
Publication year - 2003
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2002gl016643
Subject(s) - shuttle radar topography mission , remote sensing , radar , digital elevation model , geology , decimation , data processing , data set , image resolution , filter (signal processing) , space shuttle , stereo imaging , geodesy , computer science , artificial intelligence , telecommunications , computer vision , database , physics , astronomy
We assess the accuracy and resolution of topography data provided by the Shuttle Radar Topography Mission (SRTM) through spectral comparisons with the National Elevation Dataset (NED) and a high‐resolution laser data set of the 1999 Hector Mine earthquake rupture. We find that SRTM and the NED are coherent for wavelengths greater than 200 m, however the spatial resolution of the NED data is superior to the SRTM data for wavelengths shorter than 350 m, likely due to the application of a boxcar filter applied during final SRTM processing stages. From these results, a low‐pass filter/decimation algorithm can be designed in order to expedite large‐area SRTM applications.