Results 21 to 30 of about 3,699 (225)
Assessment of EGM2008 over Britain using vertical deflections, and problems with historical data [PDF]
Survey Review, 2013 AbstractVertical deflections synthesised from the Earth Gravitational Model 2008 (EGM2008) agree with astrogeodetic vertical deflections observed over mainland Britain to within ∼1·2″ RMS (north–south) and ∼1·4″ RMS (east–west), which is commensurate with values reported for North America, Australia and parts of continental Europe.
W E Featherstone
exaly +3 more sources
Evaluation and Comparison of the Processing Methods of Airborne Gravimetry Concerning the Errors Effects on Downward Continuation Results: Case Studies in Louisiana (USA) and the Tibetan Plateau (China). [PDF]
Sensors (Basel), 2017 Gravity data gaps in mountainous areas are nowadays often filled in with the data from airborne gravity surveys. Because of the errors caused by the airborne gravimeter sensors, and because of rough flight conditions, such errors cannot be completely ...
Zhao Q, Strykowski G, Li J, Pan X, Xu X.
europepmc +4 more sources
New evidence about the subduction of the Copiap\uf2 ridge beneath South America, and its connection with the Chilean-Pampean flat slab, tracked by satellite GOCE and EGM2008 models [PDF]
, 2015 Satellite-only gravity measurements and those integrated with terrestrial observations provide global gravity field models of unprecedented precision and spatial resolution, which allow analyzing lithospheric structure allowing the analysis of the ...
Alvarez, O. +6 more
core +2 more sources
Geodesy and Geodynamics, 2015 Earth's gravity model (EGM) helps people better determine the figure of Earth, which is generally represented by a global geoid. For a considerable amount of practical applications, people use quasi-geoid to approximate the geoid, thus the quasi-geoid is
Jin Li, Wenbin Shen
exaly +3 more sources
Creating a Local Quasigeoid Model for the Territory of Vietnam Using the Global Model EGM2008
Proceedings of the International Symposium "Engineering and Earth Sciences: Applied and Fundamental Research" dedicated to the 85th anniversary of H.I. Ibragimov (ISEES 2019), 2019 The article presents the results of studies on the development of methods for obtaining normal heights in Vietnam using the global model EGM2008 and software for processing GNSS measurements. Errors between normal heights calculated from the global geoid
T. Tran, M. Mustafin, A. Kuzin
semanticscholar +2 more sources
IMPORTANCE OF PRECISE GRAVITY FIELD MODELING IN DIRECT GEOREFERENCING AND AERIAL PHOTOGRAMMETRY: A CASE STUDY FOR SWEDEN [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2022 Direct georeferencing of airborne mobile mapping systems is developing with unprecedented speed using GNSS/INS integration. Removal of systematic errors is required for achieving a high accurate georeferenced product in mobile mapping platforms with ...
M. Bagherbandi +6 more
doaj +1 more source
Vestnik SSUGT (Siberian State University of Geosystems and Technologies), 2023 The improvement of the gravimetric knowledge of the Russian Federation and the creation of new models of the Earth's gravitational field (EGF) in the form of spherical harmonics of the geopotential set the task of choosing the most suitable model based ...
V. Kanushin, D. Goldobin, N. Kobeleva
semanticscholar +1 more source
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
Journal of Physics: Conference Series, 2021 Obtaining the elevation of ground points is a basic work for studying the shape of the earth and engineering construction, and can be used in civil construction, water conservancy engineering, mineral engineering, etc.
Jiaxin Huo, Xin Yang
semanticscholar +1 more source
Geoid Modelling of Kalimantan Island using Airborne Gravity Data and Global Geoid Model (EGM2008)
IOP Conference Series: Earth and Environment, 2021 The availability of geoids, especially in survey and mapping activities, is useful for transforming the geometric heights obtained from observations of the Global Navigation Satellite System (GNSS) into orthometric heights that have real physical ...
Zahroh Arsy Udama +3 more
semanticscholar +1 more source