ASSESSMENT OF RECENT GLOBAL GRAVITY FIELD MODELS BY GNSS/LEVELLING DATA

This paper focuses on making a comparing of GNSS/Levelling data and obtained from global geopotential models. For comparison, geoid undulations by method models have been used. As models, SGG-UGM-2, XGM2019e_2159, GO_CONS_GCF_2_TIM_R6e, ITSG-Grace2018s, EIGEN-GRGS.RL04.MEAN-FIELD, GOCO06s, GO_CONS_GCF_2_TIM_R6, GO_CONS_GCF_2_DIR_R6 GGMs are The sets used in the improvements altimetry, satellite, location topography. disparities between taken. Some statistical criteria for these differences calculated. These criteria, such as smallest, biggest, average, standard deviation, Root Mean Square RMS values deviations taken into consideration when According to gravity field model that best fits is selected.