Results 31 to 40 of about 18,240 (265)
Estimation of vertical datum offset for the South African vertical datum, in relation to the international height reference system [PDF]
Geodetski Vestnik, 2021 The vertical offset and the geopotential value over South Africa is estimated on the four fundamental benchmarks in relation to the international height reference system (IHRS).
Matthews Siphiwe Mphuthi +1 more
doaj +1 more source
Datum Transformation with the Minimum Curvature Surface Interpolation Approach [PDF]
Engineering and Technology Journal, 2015 This paper investigates main and important problem related to coordinates systems of Iraq. Maps of Iraq referenced to a local geodetic system while the technique oflocation observation and map production use the world geodetic system (WGS84) as a base ...
Ghydaa A. Abdul-Rehman +1 more
doaj +1 more source
New Approaches for Evaluating Lidar-Derived Shoreline [PDF]
, 2010 This study presents and compares two new methods of assessing the uncertainty of lidar-derived National Shoreline mapped by NOAA’s National Geodetic Survey: an empirical (ground-based) approach and a stochastic (Monte Carlo) approach.
Calder, Brian R. +4 more
core +2 more sources
2D Cadastral Coordinate Transformation using extreme learning machine technique [PDF]
Geodesy and Cartography, 2018 Land surveyors, photogrammetrists, remote sensing engineers and professionals in the Earth sciences are often faced with the task of transferring coordinates from one geodetic datum into another to serve their desired purpose.
Yao Yevenyo Ziggah +3 more
doaj +1 more source
A priori sensitivity analysis for densification GPS networks and their capacities of crustal deformation monitoring: a real GPS network application [PDF]
Natural Hazards and Earth System Sciences, 2014 The main purpose of this study is to investigate the possibilities of monitoring crustal movement, during collective evaluation of first- and second-order GPS densification networks.
P. Küreç, H. Konak
doaj +1 more source
User defined function for transformation of ellipsoidal coordinates [PDF]
Podzemni Radovi, 2014 The topographic plane of the Earth has irregular shape, and for the purpose of mathematical defining, it is to be approximated by rotational ellipsoid. As local geodetic datum, rotational ellipsoids of various sizes are used in the world.
Ganić Aleksandar +2 more
doaj +1 more source
Establishment of Local Geodetic Nets [PDF]
Acta Montanistica Slovaca, 2009 Establishment of Local Geodetic Nets (LGN) is closely related to the compatibility of geodetic points and to their importance. It alsoinvolved with the processes of setting up 2D LGNs and methods of verifying the datum points´ compatibility in the net ...
Heidy Schwarczová +4 more
doaj
Geoplanning: Journal of Geomatics and Planning, 2017 Most developing countries like Ghana are yet to adopt the geocentric datum for its surveying and mapping purposes. It is well known and documented that non-geocentric datums based on its establishment have more distortions in height compared with ...
Yao Yevenyo Ziggah +3 more
doaj +1 more source
Review of Geodesy: Introduction to Geodetic Datum and Geodetic Systems
Cartographic Perspectives, 2018 Fritz C. Kessler
openaire +3 more sources
Journal of Geodetic Science, 2023 New gravity and precise levelling measurements have been performed throughout the Hong Kong territories to modernize a vertical geodetic datum that is currently realized by heights of levelling benchmarks defined in the Hong Kong Principal Datum (HKPD ...
Čunderlík Robert +5 more
doaj +1 more source