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On the Consistency between a Classical Definition of the Geoid-to-Quasigeoid Separation and Helmert Orthometric Heights [PDF]
Sensors, 2023 It is acknowledged that a classical definition of the geoid-to-quasigeoid separation as a function of the simple planar Bouguer gravity anomaly is compatible with Helmert’s definition of orthometric heights.
Robert Tenzer, Albertini Nsiah Ababio
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On the geoid and orthometric height vs. quasigeoid and normal height [PDF]
Journal of Geodetic Science, 2018 The geoid, but not the quasigeoid, is an equipotential surface in the Earth’s gravity field that can serve both as a geodetic datum and a reference surface in geophysics. It is also a natural zero-level surface, as it agrees with the undisturbed mean sea
Sjöberg Lars E.
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Integration of UAV-derived digital elevation model and GNSS for orthometric height determination in urban mapping [PDF]
Nova GeodesiaAccurate orthometric height information is critical for a variety of urban geospatial applications, including cadastral mapping, infrastructure development, and flood risk assessment.
Ibrahim O. RAUFU +2 more
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Discussion on the orthometric height realization
Geodesy and Cartography, 2012 In the theory of the orthometric height, the mean value of gravity along the plumbline between the geoid and the earth's surface is defined as the integral mean. To determine the mean gravity from the gravity observations realized at the physical surface
Robert Tenzer
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A NEW PERSPECTIVE FOR PHYSICAL HEIGHTS IN BRAZIL [PDF]
Anuário do Instituto de Geociências - UFRJ, 2019 The physical heights definition of heights, proposed by Helmert in 1890 is one of the commonly used heights systems in practice. In Helmert’s definition, the mean value of gravity along plumbline is computed by simplifying the topography with a Bouguer ...
Albarici, Fabio Luiz +4 more
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Annals of Geophysics, 1997 The length of the gravitational field lines/of the orthogonal trajectories of a family of gravity equipotential surfaces/of the plumbline between a terrestrial topographic point and a point on a reference equipotential surface like the geoid í also known
E. W. Grafarend
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Modeling GPS-Derived Orthometric Heights for a Small and Dense Network
Journal of King Saud University: Engineering Sciences, 1998 The Global Positioning System (GPS) relative carrier phase observations would provide a powerful and fast tool for obtaining an accurate relative three dimensional positioning of a point on the earth.
Abdullah S. Alsalman
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ACCURACY ASSESSMENT OF DIFFERENT POLYNOMIAL GEOID MODELS IN ORTHOMETRIC HEIGHT DETERMINATION FOR AKURE, NIGERIA [PDF]
Geodetski Glasnik, 2021 Height is an important component in three dimensional coordinates and determination of the position of points for any meaningful development. Ellipsoidal heights from GNSS require geoid model which could be global, regional and local for transformation ...
Ibrahim Olatunji Raufu, Herbert Tata
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Journal of Geodetic Science, 2023 The use of orthometric height in geodetic applications provides elevations on the physical topographic surface of the earth rather than ellipsoidal heights that are not in conformity with the physical topography. Global positioning system (GPS)/levelling
Fusami Abubakar Ayuba +2 more
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Remote Sensing, 2022 Physical heights were traditionally determined without considering the dynamic processes of the Earth induced from temporal mass variations. The Gravity Recovery and Climate Experiment (GRACE) mission provided valuable data that allow the estimation of ...
Malgorzata Szelachowska +2 more
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