Results 31 to 40 of about 948 (186)
Earth, Planets and Space, 2017 The performance of Gravity field and steady-state Ocean Circulation Explorer (GOCE) global gravity field models (GGMs), at the end of GOCE mission covering 42 months, is evaluated using geoid undulations and free-air gravity anomalies over Japan ...
Patroba Achola Odera, Yoichi Fukuda
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Evaluation of ASTER GDEM in the northeastern margin of Tibetan Plateau in gravity reduction
Geodesy and Geodynamics, 2017 In this paper, we first transferred the normal height of ASTER GDEM v2 to GPS ellipsoidal height based on the EGM96, and analyzed the precision of this digital elevation model in the northeastern margin of Tibetan Plateau (NETP) combining with 89 ground ...
Guoqing Zhang +4 more
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Journal of Geodetic Science, 2013 The release of global digital databases for the description of the Earth’s topography and the shape of the Earth’s crust in terms of consistency and geometry initiates a new era in the interpretation and analysis of the observed gravity field of our ...
Tsoulis D.
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PENGGUNAAN EGM2008, EGM1996 DAN GPS-LEVELING UNTUK TINGGI UNDULASI GEOID DI SULAWESI [PDF]
, 2010 GPS is used increasingly and commonly in the last past year in all aspect of live. But the height information in GPS is not the actual height. To convert it to actual height is needed geoid undulation. Geoid has three wavelengthsi.e.
Ramdani, Dadan; Staf Balai Penelitian Geomatika BAKOSURTANAL
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Applied Sciences, 2020 Precise geoid heights are not as important for understanding Earth’s gravity field, but they are important to geodesy itself, since the vertical datum is defined as geoid in a cm-level accuracy.
Kwang Bae Kim +2 more
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Global geoid adjustment on local area for GIS applications using GNSS permanent station coordinates
Geodesy and Cartography, 2018 Orthometric heights, useful for many engineering and geoscience applications, can be obtained by GPS (Global Positioning System) surveys only when an accurate geoid undulation model (that supplies the vertical separation between the geoid and WGS84 ...
Ugo Falchi +2 more
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Improvement of GOCE-Based Global Geopotential Models for Gravimetric Geoid Modeling in Turkey
Geosciences, 2022 This study investigates the contribution of global geopotential models which are calculated with GOCE satellite mission data to the improvement of gravimetric geoid models in Turkey.
Mustafa Serkan Isik +3 more
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On the Accuracy of EGM2008 with Measured Data Based on Strap-down Airborne Gravimetry [PDF]
Proceedings of the 2015 2nd International Workshop on Materials Engineering and Computer Sciences, 2015 Gravity survey is an important research topic in geophysics and geodynamics. This paper analyzes the accuracy of EGM2008, the newest Earth gravitational model, in two areas in Shandong Province of China. By comparing the gravity anomaly data from the model with those obtained by a strap-down airborne gravimeter called SGA-WZ, it shows that error ...
Shaokun Cai, Meiping Wu, Shaoliang Li
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Assessment of EGM2008 using GPS/levelling and free-air gravity anomalies over Nairobi County and its environs [PDF]
, 2016 The performance of Earth Gravitational Model 2008 (EGM2008) is evaluated over Nairobi County and its environs using GPS/levelling and free-air gravity anomalies. The data used include 18 GPS/levelling and 97 gravity points.
Odera, Patroba Achola
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ANALYSIS OF THE GRAVITY MODELS IMPACT ON LEO SATELLITE ORBIT PREDICTION [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2022 Non-spherical gravity plays a crucial role in the LEO satellite orbit determination and prediction. In recent years, several new gravity models have been proposed with more comprehensive ground and space-borne data.
Y. Zhuang, L. Wang
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