ANALYSIS OF ELEVATION INTERPOLATION METHODS FOR DEVELOPING DIGITAL TERRAIN MODELS
A. I. Pavlova
Novosibirsk State University of Economics and Management, ul. Kamenskaya 52, Novosibirsk, 630099 Russia
Keywords: цифровая модель рельефа (ЦМР), географические информационные системы (ГИС), морфометрический анализ рельефа, интерполяция, аппроксимация, digital elevation model (DEM), geographic information systems (GIS), morphometric analysis of terrain, interpolation, approximation
Abstract
Interpolation methods for developing digital terrain model using geoinformation system data are considered. For this purpose, the best-known methods are analyzed: inverse distance weighting (IDW), kriging, ANUDEM, spline interpolation, the natural neighbor method, and the method based on the construction of a triangulation irregular network (TIN) model). The modeling accuracy is estimated for a terrain located between the Ui, Tara, and Irtysh Rivers in the Omsk region of West Siberia (Russia). Analysis of the results of estimating the accuracy of a digital terrain model developed using the ArcGIS 10 geoinformation system shows that the best results were obtained using spline methods and inverse distance weighting.
|
