Zobrazeno 1 - 10
of 263
pro vyhledávání: '"EGM96"'
Publikováno v:
South African Journal of Geomatics; Vol. 12 No. 1 (2023); 44-55
The heights determined by Global Positioning System (GPS) refer to the ellipsoid called the World Geodetic System 1984 (WGS84). Global Geopotential Models (GGMs) that are available on GNSS commercial software are generally used to transform ellipsoid
Autor:
Elena Chicaiza Mora, César Alberto Leiva González, Xavier Eduardo Buenaño Guerra, Theofilos Toulkeridis, Iván Fernando Palacios Orejuela
Publikováno v:
Geodesy and Geodynamics, Vol 12, Iss 5, Pp 356-367 (2021)
The determination of vertical component plays a fundamental role in the initial phase of engineering applications. However, its acquisition is technically and economically demanding, mainly due to the precise heights relative to a reference surface,
O Brasil está entre os países que mais possuem riquezas minerais no mundo, tendo inclusive o ouro um papel importante em sua história nos séculos XVII e XVIII. Desde então, novas descobertas ocorreram e estudos geológicos e geofísicos foram re
Autor:
Farsat Heeto Abdulrahman
Publikováno v:
Ain Shams Engineering Journal, Vol 12, Iss 2, Pp 1293-1304 (2021)
The height obtained through the GNSS method is the ellipsoidal height and to have an efficient application in surveying it has to be converted into orthometric height. This paper aims to determine a local geoid model for a part of Duhok region based
Autor:
Mohamed R. Hagag, Alshimaa A. Hussien, Mohamed Gomaa M. Mohamed, Pasent H. A. Yousef, Tarek Abou El Seoud
Publikováno v:
Civil Engineering and Architecture. 9:958-968
The accuracy of digital elevation models (DEMs) is very critical to planning adaptation strategies for coastal areas under changing scenarios of global climate and sea-level rise. This research assesses the accuracy of the interferometric DEM from th
Autor:
Raufu Ibrahim Olatunji, Herbert Tata
Publikováno v:
International Journal of Environment and Geoinformatics, Vol 8, Iss 1, Pp 100-105 (2021)
Volume: 8, Issue: 1 100-105
International Journal of Environment and Geoinformatics
Volume: 8, Issue: 1 100-105
International Journal of Environment and Geoinformatics
The advent of Global Navigation Satellite System (GNSS) and Earth Gravitational Model (EGM)particularly Global Positioning System (GPS) has modernized geodetic surveying in providing horizontal and vertical positions of points with a sub-meter level
Autor:
Polina Lemenkova
Publikováno v:
Maritime Technology and Research
Maritime Technology and Research, 2021, 3 (2), pp.162-184. ⟨10.33175/mtr.2021.248158⟩
Maritime Technology and Research, 2021, 3 (2), pp.162-184. ⟨10.33175/mtr.2021.248158⟩
International audience; This paper examines spatial variations in the geomorphology of the Ninety East Ridge (NER), located in the Indian Ocean. The NER is an extraordinary long linear bathymetric feature with topography reflecting complex geophysica
Publikováno v:
Remote Sensing, Vol 11, Iss 13, p 1542 (2019)
This paper describes the sensitivity of both the orbital frame domain selection and the gravity model on the performance of on-board real-time orbit determination. Practical error sources, which affect the navigation solution of spaceborne global pos
Externí odkaz:
https://doaj.org/article/144629116fe2407e9ed847add8ee1abe
Publikováno v:
Iraqi Journal of Science. :1823-1830
The regions around the world need to perform their results based on the local geoid. However, each region has different ground topography based on the amount of gravity in this region. Nowadays, the recent global Earth's gravity model of 2008 is succ
Autor:
J. J. Carrera-Hernández
Publikováno v:
Scientific Data, Vol 7, Iss 1, Pp 1-10 (2020)
Scientific Data
Scientific Data
Mexico has used two vertical datums—the U.S. National Geodetic Vertical Datum of 1929 (NGVD29) and the North American Vertical Datum of 1988 (NAVD88). Because Mexico started using the NAVD88 as its vertical datum in 2015, most of Mexico’s data is