Results 11 to 20 of about 24,711 (273)
Problems of the evolution of the figure and the earth's gravitational field [PDF]
E3S Web of Conferences, 2022 The relevance of geoid research involves examining a number of problems, the consideration of which reveals the evolution of the geoid. Measurements of the geoid help to understand the internal structure of our planet.
Dimitrova Alexandra +2 more
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A High-Resolution Gravimetric Geoid Model for Kuwait Using the Least-Squares Collocation
Frontiers in Earth Science, 2022 A new gravimetric geoid model, the KW-FLGM2021, is developed for Kuwait in this study. This new geoid model is driven by a combination of the XGM2019e-combined global geopotential model (GGM), terrestrial gravity, and the SRTM 3 global digital elevation ...
Hamad Al-Ajami +4 more
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GRAVIMETRIC GEOID MODELLING OVER PENINSULAR MALAYSIA USING TWO DIFFERENT GRIDDING APPROACHES FOR COMBINING FREE AIR ANOMALY [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2019 We investigate the use of the KTH Method to compute gravimetric geoid models of Malaysian Peninsular and the effect of two differing strategies to combine and interpolate terrestrial, marine DTU17 free air gravity anomaly data at regular grid nodes ...
M. F. Pa’suya +7 more
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Геофизический журнал, 2016 The application of Stokes’ formula to create geoid undulation requires no masses outside the geoid. Usually, a constant density of 2.67g / cm3 is used in the determination of the geoid which introduces error in the reduced gravity anomalies (Helmert’s ...
E.E. Epuh, J.B. Olaleye, O.G. Omogunloye
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Pot do novega modela geoida v Sloveniji ( = Towards a new geoid model of Slovenia) [PDF]
Geodetski Vestnik, 2017 The geoid model is a component of the national coordinate system. This paper presents the main concept and role of the geoid within geodesy and other geo-sciences.
Miran Kuhar
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Remote Sensing, 2022 The determination of the land geoid and the marine geoid involves different data sets and calculation strategies. It is a hot issue at present to construct the unified land–ocean quasi-geoid by fusing multi-source data in coastal areas, which is of great
Yusheng Liu, Lizhi Lou
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Geoid or Quasi-Geoid? A Short Comparison
, 2023 AbstractThis article is a short introduction to the debate on choosing the geoid and orthometric heights or the quasi-geoid and normal heights as the vertical coordinate system. It mainly compiles some more or less already known facts for comparing the two systems.
Lars E. Sjöberg, Majid Abrehdary
openaire +1 more source
ISPRS International Journal of Geo-Information, 2020 This investigation evaluates the performance of digital terrain models (DTMs) generated in different vertical datums by aerial LiDAR and unmanned aerial vehicle (UAV) photogrammetry techniques, for the determination and validation of local geoid models ...
Serdar Erol +3 more
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Analysis of the merged quasi-geoid of neighbouring areas
Geodesy and Geodynamics, 2018 Employing the merged quasi-geoid, we analyses the causes of systematic errors in modelling of quasi-geoid of neighbouring areas in the paper, and the efficient method is introduced to improve the accuracy of quasi-geoid.
Chunxi Guo +6 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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