Results 21 to 30 of about 4,829 (259)
PERFORMANCE ANALYSIS OF GEOPOTENTIAL MODELS IN ESTIMATING THE GEOIDAL HEIGHT OVER IRAN [PDF]
ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2023 Global geopotential models (GGMs) are widely used in earth sciences, especially in geodesy and geophysics. In this paper, we aim at studying GGMs' capability in the geoidal height estimation at the geographical region of Iran.
M. Mosayebzadeh +2 more
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Polynomial interpolation methods in development of local geoid model
Egyptian Journal of Remote Sensing and Space Sciences, 2018 In geodesy three surfaces, the physical surface of the earth, the geoid and the reference ellipsoid are encountered giving rise to orthometric height (h), the ellipsoidal height (H) and the geoidal separation (N).
Rabindra Kumar Das +3 more
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International Journal of Environment and Geoinformatics, 2021 The advent of Global Navigation Satellite System (GNSS) and Earth Gravitational Model (EGM)particularly Global Positioning System (GPS) has modernized geodetic surveying in providing horizontal and vertical positions of points with a sub-meter level of ...
Herbert TATA, Raufu OLATUNJİ
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REPLACING ORTHOMETRIC HEIGHTS WITH ELLIPSOIDAL HEIGHTS IN ENGINEERING SURVEYS
Nigerian Journal of Technology, 2016 Differential Global Positioning System (DGPS) is one of the most frequently used positioning methods in geodesy. The end products of surveying with Global Navigation Satellite Systems (GNSS)are geodetic latitude (ϕ), geodetic longitude (λ) and ellipsoidal height (h) which are obtained with reference to the ellipsoid.
Badejo, OT, Aleem, KFA, Olaleye, JB
openaire +3 more sources
Geodetski Vestnik, 2022 In this work, we analyzed the quality of height transformation between the old height system SVS2000 (vertical datum Trieste) and the new height system SVS2010 (vertical datum Koper).
Božo Koler +2 more
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A MATLAB GEODETIC SOFTWARE FOR PROCESSING AIRBORNE LIDAR BATHYMETRY DATA [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2015 The ability to build three-dimensional models through technologies based on satellite navigation systems GNSS and the continuous development of new sensors, as Airborne Laser Scanning Hydrography (ALH), data acquisition methods and 3D multi-resolution ...
M. Pepe, G. Prezioso
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Observation of a local gravity potential isosurface by airborne lidar of Lake Balaton, Hungary [PDF]
Solid Earth, 2014 Airborne lidar is a remote sensing method commonly used for mapping surface topography in high resolution. A water surface in hydrostatic equilibrium theoretically represents a gravity potential isosurface.
A. Zlinszky +6 more
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Egyptian Journal of Remote Sensing and Space Sciences, 2023 Orthometric heights are important for various applications such as GIS, geomatics, engineering, and geoscience. The ellipsoidal heights can be computed by Global Navigation Satellite System (GNSS) as an accurate, rapid, and efficient method for height ...
Ahmed Zaki +4 more
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Efficient methods to convert LiDAR-derived ellipsoid heights to orthometric heights
International Journal of Applied Earth Observation and Geoinformation, 2012 Abstract Nowadays cartographic products are usually obtained from data sources which provide large amount of data. LiDAR acquisition system is a good example of the great quantity of data obtained, such as points with spatial coordinates in a determined reference system. The height of these points is usually related to a global ellipsoid (e.g. WGS84),
J.L. Pérez +6 more
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Spatial uncertainty of a geoid undulation model in Guayaquil, Ecuador
Open Geosciences, 2017 Geostatistics is a discipline that deals with the statistical analysis of regionalized variables. In this case study, geostatistics is used to estimate geoid undulation in the rural area of Guayaquil town in Ecuador.
Chicaiza E.G. +3 more
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