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DEVELOPMENT OF A LOCAL GEOID MODEL AT THE FEDERAL DISTRICT, BRAZIL, PATCH BY THE REMOVE-COMPUTE-RESTORE TECHNIQUE, FOLLOWING HELMERT'S CONDENSATION METHOD

Giuliano Sant’Anna Marotta,Roberta Mary Vidotti

There are several techniques for determining geoid heights using ground gravity data, the geopotential models, the astro-geodetic components or a combination of them. Among the techniques used, the Remove-Compute-Restore (RCR) technique has been widely ap... see more

Local geoid model | Helmert's condensation method | Remove-Compute-Restore technique.

Boletim de Ciências Geodésicas , 2017

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USING A LEAST SQUARES SUPPORT VECTOR MACHINE TO ESTIMATE A LOCAL GEOMETRIC GEOID MODEL

SZU-PYNG KAO KAO,CHAO-NAN CHEN,HUI-CHI HUANG,YU-TING SHEN

In this study, test-region global positioning system (GPS) control points exhibitingknown first-order orthometric heights were employed to obtain the points of planecoordinates and ellipsoidal heights by using the real-time GPS kinematicmeasurement method... see more

Least Squares Support Vector Machine (LS-SVM) | Kernel Function | Local Geoid Model

Boletim de Ciências Geodésicas , 2014

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Preliminary Study of the Gravimetric Local Geoid Model in Jordan:

O. Al-Bayari,A. Al-Zoubi

Recently, there is an increased interest in studying and defining the Local and Regional Geoid Model worldwide, due to its importance in geodetic and geophysics applications. The use of the Global Positioning System (GPS) is internationally growing, yet t... see more

Gravimetric Jordanian Geoid Model (GeoJordan) | Least Square Collocation (LSC) | Global Geopotential Model (GGM) | Global Positioning System (GPS) | Undulation (N)

Annals of Geophysics , 2007

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Preliminary study of the Gravimetric Local Geoid Model in Jordan: case study (GeoJordan Model)

O. Al-Bayari,A. Al-Zoubi

Recently, there has been an increased interest in studying and defining the Local and Regional Geoid Model worldwide, due to its importance in geodetic and geophysics applications.The use of the Global Positioning System (GPS) is internationally growing, ... see more

Gravimetric Jordanian Geoid Model (GeoJordan) | Least Square Collocation (LSC) | Global Geopotential Model (GGM) | Global Positioning System (GPS) | undulation (N)

Annals of Geophysics , 2007

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PERFORMANCE OF ARTIFICIAL NEURAL NETWORKS ON KRIGING METHOD IN MODELING LOCAL GEOID

HAKAN AKCIN,CAHIT TAGI CELIK

A transformação das altitudes elipsoidais determinadas por técnicas satelitais emlocais de altitudes niveladas requer o conhecimento da altitude geoidal no ponto deinteresse. Entretanto, as altitudes geoidais de cada ponto nem sempre estãodisponíveis. A f... see more

Geóide | Modelamento do geóide local | ANN | Krigagem | Transformações.

Boletim de Ciências Geodésicas , 2013

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Proposta de um modelo geoidal geométrico local aproximado baseado em dados GNSS e nivelamento geométrico: análise comparativa com o MAPGEO 2015

Diego Brum,Mauricio Roberto Veronez,Fabiane Bordin,Gabriel Soares,Eduardo Kediamosiko Nzinga,Graciela Eliane dos Reis Racolte,Ivandro Klein

O advento da tecnologia GNSS (Global Navigation Satellite System) possibilitou muitos avanços em diversas áreas da ciência e engenharia. Porém, as altitudes obtidas a partir do posicionamento com esse sistema são de natureza puramente geométrica e sem rel... see more

Altura Geoidal | Nivelamento Geométrico | Sistema Global de Navegação por Satélites | Krigagem

Revista Brasileira de Geomática , 2020

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ON ACCURATE GEOID MODELING: DERIVATION OF DIRICHLET PROBLEMS THAT GOVERN GEOIDAL UNDULATIONS AND GEOID MODELING BY MEANS OF THE FINITE DIFFERENCE METHOD AND A HYBRID METHOD

EDUARDO DEL RIO

The geoid is the reference surface used to measure heights (orthometric). These areused to study any mass variability in the Earth system. As the Earth is representedby an oblate spheroid (Ellipsoid), the geoid is determined by geoidal undulations(N) whic... see more

Geoid Modeling | Ellipsoidal Dirichlet Problem | Finite Difference Method | Stokes's Integral.

Boletim de Ciências Geodésicas , 2014

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ESTUDO COMPARATIVO DOS MODELOS GRAVIMÉTRICOS GLOBAIS EIGEN-GL04C, EIGEN-CG03C E EIGEN-05C UTILIZANDO UM MODELO REGIONAL E DADOS GPS/NIV PARA O ESTADO DO PARANÁ.

KAROLINE PAES JAMUR,SILVIO ROGÉRIO CORREIA DE FREITAS

Apresenta-se análise qualitativa das alturas geoidais associadas aos modelos geopotenciais globais combinados: EIGEN-GL04C advindo da missão gravimétrica GRACE (Gravity Recovery and Climate Experiment) e da missão laser (LAGEOS - Laser Geodynamics Satelli... see more

Modelos Geopotenciais | Modelos geoidais | Missão CHAMP | Missão GRACE.

Boletim de Ciências Geodésicas , 2009

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USING PARTICLE SWARM OPTIMIZATION TO ESTABLISH A LOCAL GEOMETRIC GEOID MODEL

Szu-Pyng Kao,Fang-Shii Ning,Chao-Nan Chen,Chia-Ling Chen

There exist a number of methods for approximating the local geoid surface and studies carried out to determine a local geoid. In this study, performance of geoid by PSO method in modeling local geoid was presented and analyzed. The ellipsoidal heights (h)... see more

Particle swarm optimization (PSO) | Quadratic surface fitting | Ellipsoidal height | Orthometric height

Boletim de Ciências Geodésicas , 2017

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