Results 21 to 30 of about 1,948 (180)
Accuracy Assessment of High-Degree Geopotential Models in Peninsular Malaysia [PDF]
, 2023 The selection of the accurate geoid model is essential for geoid determination in specific regions. Many improvements to the basic theory of more reliable data are available for numerical modelling studies.
Sulaiman, S. A.H. +3 more
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Geodesy and Geodynamics, 2023 The availability of many high-degree Global Geopotential Models (GGMs), namely EGM2008, EIGEN-6C4, GECO, SGG-UGM-1, SGG-UGM-2, XGM2019e_2159, and GGMPlus, challenges users regarding which model is best for Vietnam.
Hoa Thi Pham +3 more
doaj +1 more source
The Refined Gravity Field Models for Height System Unification in China
Remote Sensing, 2022 A unified height datum is essential for global geographic information resource construction, ecological environment protection, and scientific research.
Panpan Zhang +6 more
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Joint analysis of selected GRACE monthly spherical harmonic solutions and monthly MASCON solutions
Contributions to Geophysics and Geodesy, 2021 Study presented in this paper is focused on comparison and statistical assessment of differences between the selected Level 2 products of the satellite mission Gravity Recovery and Climate Experiment (GRACE).
Adam NOVÁK +2 more
doaj +1 more source
EVALUATION OF RECENT GLOBAL GEOPOTENTIAL MODELS BY GNSS/LEVELLING DATA: INTERNAL AEGEAN REGION [PDF]
, 2016 Global geopotential models of spherical harmonic coefficients are used to determine the external gravitational field of the Earth. These coefficients are derived from satellite orbit perturbations, terrestrial gravity anomalies and altimeter data ...
Turgut, B. +7 more
core +1 more source
Applied Sciences, 2021 Mean dynamic topography (MDT) is crucial for research in oceanography and climatology. The optimal interpolation method (OIM) is applied to MDT modeling, where the error variance–covariance information of the observations is established.
Yihao Wu +3 more
doaj +1 more source
Global Geopotential Model Evaluations and Local Geoid in Indonesia: A Review
IOP Conference Series: Earth and Environmental Science, 2021 Abstract Geoid model was chosen as a vertical reference in Indonesia based on the Head of the Geospatial Information Agency Regulation (Perka BIG) No. 15 of 2013 concerning the Indonesian Geospatial Reference System (SRGI2013). Therefore, the development of local geoid models continues to be carried out to obtain good accuracy. The geoid
Hamidatul Aminah, Ira Mutiara Anjasmara
openaire +1 more source
Terrestrial, Atmospheric and Oceanic Sciences, 2013 The geoid-to-quasigeoid correction has been traditionally computed approximately as a function of the planar Bouguer gravity anomaly and the topographic height.
Mohammad Bagherbandi Robert Tenzer
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Geodetski Vestnik, 2022 This study aims to analyze the quality of several local reference quasigeoid surfaces obtained from several Global Geopotential Models (GGM) relative to the official quasigeoid solution of Serbia (SQM2011) and GNSS/dh observations for the territory of ...
Marko D. Stanković +2 more
doaj +1 more source
Evaluation of recent Earth’s global gravity field models with terrestrial gravity data
Contributions to Geophysics and Geodesy, 2016 In the context of the rapid development of environmental research technologies and techniques to solve scientific and practical problems in different fields of knowledge including geosciences, the study of Earth’s gravity field models is still important ...
Alexander P. KARPIK +5 more
doaj +1 more source