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Interpolation Method Used To Determine The Height Of Geoid, Application Of The Trabzon City Data, TurkeyKaraaslan, ÖzgeKayıkçı, Emine TanırAşık, Yusufİnşaat MühendisliğiFinding the spatial extent of known height used in engineering works quite time-consuming process that requires a difficult and cost. But the less time it takes the ellipsoid heights transformation into orthometric height with GNSS measurements available and easier. It also has a certain precision and sensitivity for the conversion geoid height values must be known. This practice in Trabzon Land Registry IX. Regional Directorate of cadastral works in east-west direction of 80 km, measured orthometric and ellipsoidal heights in the 600 C3 point values created in an area 30 km long north-south direction is used. the point ITRF96 (International Terrestrial Reference Frame-International Terrestrial Reference Network) datums based on 3-dimensional Cartesian coordinates and Gauss Krüger projection coordinates are known. The study is divided into two basis points according to the method and test points. Fulcrums x and y axis directions and the distribution of points is chosen uniformly reflected by the orthometric height. In this study, the polynomial interpolation surfaces, interpolation with multiquadratic surfaces with interpolation surface obtained by the method of weighted average method is used. in selected mainstay, known aware of the ellipsoidal and the orthometric height using the calculated geoid height, calculated orthometric heights for the test points with different interpolation methods, at this point in the known calculating the difference from the known height has made comparisons between the interpolation method2016Articlehttps://rdlopen.rawdatalibrary.net/r/gumushane/18561trHarita Teknolojileri Elektronik Dergisiinfo:eu-repo/semantics/closedAccessinfo:eu-repo/semantics/articlehttps://gumushane-rdlopen.rawdatalibrary.net/tr/items/gumushane/18561