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Saints Cyril and Methodius University of Skopje , Skopje , North Macedonia
This study investigates the performance of several digital elevation models (DEMs) over a selected area in Western Macedonia. The objective is to identify the most suitable DEM to serve as a reliable reference for the representation of topographic masses used in gravity anomaly determination, terrain correction computation, and geoid modeling. The evaluated DEMs are assessed for their capability to accurately represent topographic information needed for short-wavelength variations of the Earth’s gravity field. Validation is performed through comparisons between DEM-derived orthometric heights and terrestrial measurements, as well as analyses involving corrector surfaces for removal of the systematic bias that exists between different vertical datums.
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