Relief modelling methods for topographic plans in urbanized territories

Abstract

Relief modelling methods based on surveying data and GIS technologies for topographic plans creation in rapidly changing urbanised territories are analysed in the paper. 99 296 m2 (9.9296 ha) area of Vilnius city, Antakalnis eldership, Šilenu street was selected for the research. Geodetic measurements were performed by Trimble 5800 – Global Positioning System (GPS) receiver. Observation period – from the end of 2006 till the beginning of 2007. 568 height points were observed and used for digital relief modelling in this territory. Three methods were used for modelling: Kriging, Spline, and Inverse Distance Weighting (IDW). Depending on relief complexity, the suitability of these methods is analysed. The selection method was based on accuracy of standard deviation estimates.