Results 41 to 50 of about 83,920 (263)
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
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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
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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
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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
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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
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Journal of Geospatial Information Science and Engineering, 2019 Geoid has an important role in converting geodetic heights to physical heights, both in orthometric height system and normal height systems. At present, Semarang City already has gravimetric geoid with centimeter-level precision.
Laode M Sabri
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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
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Vojnotehnički Glasnik, 2008 U radu je prikazan postupak i predložene su formule za transformacije iz Gaus-Krigerove projekcije, koja se koristi u Srbiji, u Svetsku poprečnu Merkatorovu projekciju i obratno.
Stevan Radojčić
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Journal of Marine Science and Engineering, 2020 Coastal and Marine Geographic Information Systems (CMGISs) permit to collect, manage, and analyze a great amount of heterogeneous data concerning coastal, sea, and ocean environments, e.g., nautical charts, topographic maps, remotely sensed images.
Emanuele Alcaras +2 more
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Global and microlocal aspects of Dirac operators: Propagators and Hadamard states
Mathematische Nachrichten, EarlyView.Abstract We propose a geometric approach to construct the Cauchy evolution operator for the Lorentzian Dirac operator on Cauchy‐compact globally hyperbolic 4‐manifolds. We realize the Cauchy evolution operator as the sum of two invariantly defined oscillatory integrals—the positive and negative Dirac propagators—global in space and in time, with ...
Matteo Capoferri, Simone Murro
wiley +1 more source