Comparative Study of Interpolation Methods in Development of Local Geoid

Аннотация

The main aims of the research are to estimate the efficiency of different methods of interpolation (Natural Neighbour, Inverse Distance Weighting, Kriging and Topo to Raster) for the normal height determination by comparing with heights anomalies determined by using GPS-leveling and global gravitational model EGM2008. The discrepancies between the calculated and interpolated heights were analyzed and discussed for Fergana valley located within in Republic of Uzbekistan. Comparison of the results with the data of global gravimetric model EGM 2008 showed that the best interpolation surface demonstrated Natural Neighbour and Topo to Raster methods for considered region.

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DOI

10.52939/ijg.v11i1.1114

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