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Pregled bibliografske jedinice broj: 933134

Accuracy Assessment and Comparison of Interpolation Methods on Geoid Models


Radanović, Marko; Bašić, Tomislav
Accuracy Assessment and Comparison of Interpolation Methods on Geoid Models // Geodetski vestnik, 62 (2018), 1; 68-78 (međunarodna recenzija, članak, znanstveni)


Naslov
Accuracy Assessment and Comparison of Interpolation Methods on Geoid Models

Autori
Radanović, Marko ; Bašić, Tomislav

Izvornik
Geodetski vestnik (0351-0271) 62 (2018), 1; 68-78

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Geoid, geoid model, spatial interpolation, global geopotential model, interpolation, Croatia

Sažetak
In this paper the accuracy of 6 spatial interpolation methods on geoid grid models are tested and compared: Inverse Distance Weighting, Kriging, Minimum Curvature, Natural Neighbour, Radial Basis Function and Moving Average. Grid models are derived from three global geopotential models: EGM2008, EIGEN-6C4 and GECO. Totally 18 geoid models in forms of equiangular grid models are created in GoldenSoftware Surfer 13 for this purpose, by combining 6 methods of interpolation and 3 global models, whose size and position cover a wide area of Croatia with parts of neighbouring countries. Default interpolation parameters were kept during the process. Models were created in a way that modelled values of geoid undulations can be subtracted from undulations of independent models in equal points. Residuals calculated in this way served as a base for quality assessment. Comparative analysis of quality indicators, statistics and graphical indicators of residuals led to a conclusion that the best-fitted methods of interpolation for this specific case are Radial Basis Function, Kriging, and Natural Neighbour, in that order.

Izvorni jezik
Engleski

Znanstvena područja
Geofizika, Geodezija



POVEZANOST RADA


Ustanove
Geodetski fakultet, Zagreb

Časopis indeksira:


  • Web of Science Core Collection (WoSCC)
    • Social Science Citation Index (SSCI)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus