A precise geoid model for Africa: AFRgeo2019
HA Abd-Elmotaal, N Kühtreiber, K Seitz… - Beyond 100: The Next …, 2020 - Springer
In the framework of the IAG African Geoid Project, an attempt towards a precise geoid model
for Africa is presented in this investigation. The available gravity data set suffers from …
for Africa is presented in this investigation. The available gravity data set suffers from …
Precision evaluation of recent global geopotential models based on GNSS/leveling data on unified control points
J Lee, JH Kwon - Journal of the Korean Society of Surveying …, 2020 - koreascience.kr
After launching the GOCE (Gravity Field and Steady-State Ocean Circulation Explorer)
which obtains high-frequency gravity signal using a gravity gradiometer, many research …
which obtains high-frequency gravity signal using a gravity gradiometer, many research …
Evaluation of GOCE-based global gravity field models over Japan after the full mission using free-air gravity anomalies and geoid undulations
The performance of Gravity field and steady-state Ocean Circulation Explorer (GOCE) global
gravity field models (GGMs), at the end of GOCE mission covering 42 months, is evaluated …
gravity field models (GGMs), at the end of GOCE mission covering 42 months, is evaluated …
Evaluation of global gravity field models using shipborne free-air gravity anomalies over the Gulf of Guinea, Central Africa
KP Gautier, Y Loudi, ZA Alain, KH Ludovic… - Survey …, 2022 - Taylor & Francis
In this work, the principal aim is to evaluate some recent GGMs on the Gulf of Guinea region
using shipborne free-air gravity data. Two types of GGMs are evaluated in this study …
using shipborne free-air gravity data. Two types of GGMs are evaluated in this study …
AFRGDB_V2. 0: the gravity database for the geoid determination in Africa
HA Abd-Elmotaal, K Seitz, N Kühtreiber… - … Symposium on Advancing …, 2019 - Springer
The available gravity data set for Africa consists of land point gravity data as well as
shipborne and altimetry derived gravity anomalies data, but suffers from a lot of significant …
shipborne and altimetry derived gravity anomalies data, but suffers from a lot of significant …
An alternative geoid model for Africa using the shallow-layer method
M Ashry, WB Shen, HA Abd-Elmotaal - Studia Geophysica et Geodaetica, 2021 - Springer
The aim of the current investigation is to determine an alternative geoid model for Africa
using the shallow-layer method. The shallow-layer method, following the basic definition of …
using the shallow-layer method. The shallow-layer method, following the basic definition of …
Estimating gravity field and quasi-geoid in Cameroon (CGM20)
R Barzaghi, D Carrion, J Kamguia, LH Kande… - Journal of African Earth …, 2021 - Elsevier
In this paper, the computation of the new gravimetric quasi-geoid of Cameroon based on
some recent global geopotential models and a detailed Digital Terrain Model (DTM) of the …
some recent global geopotential models and a detailed Digital Terrain Model (DTM) of the …
Validation of a tailored gravity field model for precise quasigeoid modelling over selected sites in Cameroon and South Africa
In this study, a tailored gravity-field model is developed to fit and recover local terrestrial
gravity data by integrating gravity from global gravity-field models, residual gravity derived …
gravity data by integrating gravity from global gravity-field models, residual gravity derived …
Establishment of the gravity database AFRGDB_V1. 0 for the African geoid
HA Abd-Elmotaal, K Seitz, N Kühtreiber… - IGFS 2014: Proceedings …, 2016 - Springer
In the framework of the IAG African Geoid Project it is needed to have a uniform gridded
gravity data set to compute the geoid using Stokes' integral in the frequency domain by 1-D …
gravity data set to compute the geoid using Stokes' integral in the frequency domain by 1-D …
Local geoid model of the Western Desert in Egypt using terrestrial gravity data and global geopotential models
The local hybrid geoid model for the western desert in Egypt is computed by recent data,
including the global geopotential models, gravimetric measurements, and a high-resolution …
including the global geopotential models, gravimetric measurements, and a high-resolution …