Investigation of discrepancies of some geoids determined using various methods for Turkey
Geopotential
DOI:
10.5897/ijps11.805
Publication Date:
2011-09-16
AUTHORS (2)
ABSTRACT
In this study, the causes and size of discrepancies between various geoid models were investigated. Local (Turkish Geoid-1991, Turkish GPS/Leveling Geoid, Updated Geoid-1999, Geoid-2003, Hybrid Geoid Model-2009) global (EIGEN-GL04C, EIGEN-GL04S1, EIGEN-5C) used in Turkey. Thirty different points selected The heights calculated. These compared terms criteria based on their developments height differences calculated using these at test points. from some observed among models. reasons behind discussed. It is disclosed that TG-99A EIGEN-5C are best fitting to geoid.
Key words: Gravity, geoids, geopotential models, GPS/leveling.
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