Results 41 to 50 of about 3,574 (209)

DATUM TRANSFORMATIONS FOR MAPPING APPLICATIONS: THEORETICAL AND PRACTICAL ASPECTS [PDF]

open access: yes, 2016
Il problema delle trasformazioni tra sistema di riferimento globale, cui si appoggiano le moderne tecniche di posizionamento spaziale GNSS (Global Navigation Satellite System), e sistemi di riferimento nazionali, adottati storicamente per la ...
Barzagni, Riccardo   +3 more
core   +1 more source

La forma de la tierra: Expedición para medir un grado del arco de meridiano en el Virreinato del Perú (1735-1744) [PDF]

open access: yes, 2007
Si consideramos la forma de la Tierra desde un punto de vista matemático, entonces no debemos tener en cuenta la forma de su relieve continental ni las alteraciones en el nivel de los mares.
San Antonio Gomez, Jose Carlos de
core   +4 more sources

Gravimetría aérea para la determinación del geoide local

open access: yesUniciencia, 2004
En el presente artículo se describe la estimación del geoide local usando la componente vertical del vector de perturbación de gravedad obtenida a partir de un vuelo gravimétrico.
Juan Gilberto Serpas
doaj  

An Evaluation of Recent Global Geopotential Models for Strip Area Project in Turkey

open access: yesEarth Sciences Research Journal, 2016
The aim of this study is to present the evaluations based on comparisons of geoid heights that are computed from several global geopotential models (GGMs) and the GNSS/levelling data.
Serkan Doganalp
doaj   +1 more source

Gravity recovery from SWOT altimetry using geoid height and geoid gradient

open access: yesRemote Sensing of Environment, 2021
Abstract The Surface Water and Ocean Topography (SWOT) altimeter mission can measure high-resolution wide-swath sea surface heights (SSHs) that may greatly improve the current accuracy and spatial resolution of marine gravity from nadir-looking altimeters.
Yu, Daocheng   +4 more
openaire   +2 more sources

SIG aplicado al cálculo de los valores de altura ortométrica usando un modelo de ondulación geoidal para el Distrito Metropolitano de Quito, Ecuador. [PDF]

open access: yes, 2012
Traditionally, to obtain high values of any point on the surface of the Earth, they had to perform direct processes of data collection, such as geometric level effect, which involves very high costs and a long time in order to run.
Zurita Lozada, Patricio Javier
core  

El modelo geoidal regional GGM-CA-2015, resultados y experiencia de la cooperación técnica en la región México, Centroamérica y el Caribe

open access: yesRevista Cartográfica, 2019
En épocas recientes, las agencias federales encargadas de administrar información geográfica básica, han recibido por parte de la comunidad científica una clara reco- mendación de cambio sobre la forma de determinar el control de coordenadas verti- cales,
David Ávalos-Naranjo   +8 more
doaj   +1 more source

Crustal structure and tectonic setting of the south central Andes from gravimetric analysis [PDF]

open access: yes, 2013
En el presente trabajo, a partir de datos gravimétricos terrestres, se preparó una carta de anomalías de Bouguer, la cual fue adecuadamente filtrada a fin de separar efectos gravimétricos someros y profundos.
Alvarez Pontoriero, Orlando   +6 more
core   +2 more sources

ANÁLISE DO VÍNCULO DO DATUM VERTICAL BRASILEIRO A UM SISTEMA GLOBAL DE ALTITUDES

open access: yesRevista Brasileira de Cartografia, 2014
As diversas redes verticais fundamentais no mundo não formam um Sistema Global de Altitudes (SGA) consistente, pois cada uma, em geral, recorre a um nível de referência particular ao qual se associa hipoteticamente uma determinada superfície ...
Alessandra Svonka Palmeiro   +2 more
doaj  

Analysis of high-resolution global gravity field models for the estimation of International Height Reference System (IHRS) coordinates in Argentina

open access: yesJournal of Geodetic Science, 2022
Following the definition and realization of the International Height Reference System (IHRS), the vertical coordinate of a given point at the Earth’s surface can be obtained from the computation of the geopotential value from a harmonic expansion of a ...
Tocho Claudia N.   +4 more
doaj   +1 more source

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