Title
AN EVALUATION OF DIGITAL TERRAIN MODEL ACCURACY USING DIRECT SURVEY DATA
Autor
Czesław Suchocki, Marzena Damięcka-Suchocka, Paweł Błoch, Marcin Stec
Keywords
Digital Terrain Model (DTM), GRID, TIN, RMS error, statistical coefficients
Abstract
A Digital Terrain Model (DTM) is an important, widely used source of information about the shape of the Earth which is integral to many scientific and economic fields. The surface of an area of land is usually represented in the form of a Triangular Irregular Network (TIN) or a regular grid of squares (GRID). Current users of DTM have been expressing a need for more accurate representations of physical land surfaces. Comparisons of the quality and accuracy of TIN and GRID models has become an important topic of interest. This paper presents an evaluation of the accuracy of Digital Terrain Models based on direct survey data. Data were gathered from GPS RTK measurements of a 1-hectare area with about 12m of elevation. One TIN and two GRID models were built using interpolation algorithms: Natural Neighbor and Spline. The assessment of the accuracy of the models was based on errors in the value of the RMS and selected statistical coefficients
Pages
17-26
Cite
Suchocki, C., Damięcka-Suchocka, M., Błoch, P., Stec, M. (2013). AN EVALUATION OF DIGITAL TERRAIN MODEL ACCURACY USING DIRECT SURVEY DATA. Acta Sci. Pol. Geod. Descr. Terr., 12(3), 17-26.
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