Accuracy of SPOT digital elevation model and derivatives: utility for Alaska's north slope

K. C. Sasowsky, G. W. Petersen, Barry Michael Evans

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42 Scopus citations

Abstract

This investigation not only evaluates the accuracy of a portion of a SPOT DEM but evaluates products derived from it; namely, slopes, aspects, and thickness of thaw layer. A DEM was created from an image pair with less than optimum difference between image acquisition angles at a study site in northern Alaska. Root mean square (RMS) errors for elevations were 19.3m and 13.7m and for slopes were 2.7% to 4.0%. Aspects agree in general slope orientation. Even though the area had relatively low relief (~250m with a ~25km2 area), the SPOT-derived DEM provides sufficiently accurate ground elevation, slope gradient, and aspect data for use in ecosystem investigations. -from Authors

Original languageEnglish (US)
Pages (from-to)815-824
Number of pages10
JournalPhotogrammetric Engineering & Remote Sensing
Volume58
Issue number6
StatePublished - Jan 1 1992

All Science Journal Classification (ASJC) codes

  • Computers in Earth Sciences

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