Zobrazeno 1 - 10
of 205
pro vyhledávání: '"gps-levelling"'
Publikováno v:
JES: Journal of Engineering Sciences, Vol 52, Iss 1, Pp 31-52 (2024)
Within the context of the remove-restore technique, this research seeks to determine the best combination of gravity field wavelengths for Egypt’s geoid computation. There are various methods for such a wavelength combination. It has been proposed
Externí odkaz:
https://doaj.org/article/f1dbc3116b0747fc86fc905f592cde73
Autor:
Hussein ABD-ELMOTAAL, Atef MAKHLOOF
Publikováno v:
Contributions to Geophysics and Geodesy, Vol 53, Iss 4, Pp 377-398 (2023)
In this paper, two proposed geoid fitting techniques for Egypt's gravimetrically determined geoid and Global Positioning System GPS/levelling-derived geoid are introduced. First, any errors in the available GPS stations are ruled out. These methods r
Externí odkaz:
https://doaj.org/article/7dc206c36a774c59bd43c7612bcb1f81
Publikováno v:
Journal of Geodetic Science, Vol 12, Iss 1, Pp 131-140 (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 o
Externí odkaz:
https://doaj.org/article/0d7070bae56a4ea8aa7b6bd6b9aa0746
Autor:
Olusola Gabriel Omogunloye, M. O. Yaqub, Babatunde Moses Ojegbile, J. O. Odumosu, O. G. Ajayi
Publikováno v:
Geoinformatics FCE CTU, Vol 17, Iss 1, Pp 45-60 (2018)
AbstractComparison of orthometric heights obtained from the combination of GPS/Levelling survey method with that obtained from Lidar, Srtm, and Astergdem data is an area of research which is of great interest to Geomaticians. This area of research ma
Externí odkaz:
https://doaj.org/article/22a49c103fab4c39b8e3e1cd9ab06870
Akademický článek
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Publikováno v:
Geodesy and Geodynamics, Vol 8, Iss 6, Pp 408-412 (2017)
Estimation of the zero-height geopotential value W0LVD for the CVD (China Vertical Datum) plays a fundamental role in the connection of traditional height reference systems into a global height system. Estimation the W0LVD of China is based on the co
Externí odkaz:
https://doaj.org/article/81df2adec96549eebc2b3ccee0cff1dd
Autor:
Patroba Achola Odera, Yoichi Fukuda
Publikováno v:
Earth, Planets and Space, Vol 69, Iss 1, Pp 1-7 (2017)
Abstract 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 using geoid undulations and free-air gravity anomalies over J
Externí odkaz:
https://doaj.org/article/aea618107f8046bab3ac91a6be1ea2d0
Publikováno v:
Geodesy and Cartography, Vol vol. 67, Iss No 2 (2018)
In this paper, two techniques for calculating the geoid-to-quasigeoid separation are employed. One of them is GPS/Levelling customary method as a criterion where the geoid undulation and height anomaly are computed by subtracting the ellipsoid height
Externí odkaz:
https://doaj.org/article/27458e55cbe24a798717e01b209762cb
Autor:
Prasanna, HMI
With the advent of new gravity-dedicated satellite missions (CHAMP, GRACE, and GOCE), the long wavelength gravity field modelling of the Earth is possible with remarkable accuracy. Numerous global geopotential models (GGMs) have been developed to dat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::713e5a9b65d62a417c56d5d9d6e264e3
