Zobrazeno 1 - 10
of 238
pro vyhledávání: '"Geoid model"'
Publikováno v:
Communications in Science and Technology, Vol 9, Iss 1, Pp 144-152 (2024)
This article evaluates the quality of the national 3-D positioning infrastructure using multi-criteria decision making (MCDM) to simulate the potential application of multi-GNSS method. The MCDM evaluation used coverage and availability of Indonesia
Externí odkaz:
https://doaj.org/article/fed8ffed1e474394a65f71872dda39c5
Autor:
Stepan Savchuk, Alina Fedorchuk
Publikováno v:
Geodesy and Geodynamics, Vol 15, Iss 1, Pp 42-49 (2024)
At present, one of the methods used to determine the height of points on the Earth's surface is Global Navigation Satellite System (GNSS) leveling. It is possible to determine the orthometric or normal height by this method only if there is a geoid o
Externí odkaz:
https://doaj.org/article/043a34fa2368404d8e1bdb3cad6faeec
Publikováno v:
Journal of King Saud University: Engineering Sciences, Vol 35, Iss 6, Pp 384-392 (2023)
Global Navigation Satellite System (GNSS) provides ellipsoidal heights, whereas engineering projects need orthometric heights of points. Thus, to take advantage of GNSS in engineering work, the relation between orthometric and ellipsoid height must b
Externí odkaz:
https://doaj.org/article/4f5af7380e9749ef9041f7dc50347733
Publikováno v:
Remote Sensing, Vol 16, Iss 5, p 816 (2024)
The determination of the geoid–quasigeoid separation (GQS) is most often based on the use of Bouguer gravity anomalies or disturbances with additional corrections, which allow for the determination of so-called complete or accurate GQS values. This
Externí odkaz:
https://doaj.org/article/cc3402e008ec4163b7ce45af1ca7f58a
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Publikováno v:
Remote Sensing, Vol 15, Iss 22, p 5414 (2023)
This study presents a methodology for constructing a quasi-geoid model with millimeter-level accuracy over the Shangyu area in China, following the guidelines of the International Association of Geodesy Joint Working Group 2.2.2, known as “The 1 cm
Externí odkaz:
https://doaj.org/article/6f65a21aab7d45639fbe931fe70ec1c6
Autor:
Neti Srihanu, Siwa Kaewplang
Publikováno v:
วารสารวิทยาการสารสนเทศและเทคโนโลยีประยุกต์, Vol 4, Iss 1, Pp 32-47 (2021)
This study aims to provide an understanding of the horizontal positional accuracy and Google Earth height compare with Static GNSS surveying. The results showed the RMSE obtained in E, N, Z(EGM96), and Z (TGM2017) were 1.316, 1.331, 3.558, and 4.453
Externí odkaz:
https://doaj.org/article/0a0b463ebf7943cc8cc233d75e24f03c
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
Externí odkaz:
https://doaj.org/article/34ae4c32fcbc42a88f816e37e6e31c80
Publikováno v:
Remote Sensing, Vol 15, Iss 8, p 2189 (2023)
Accurate determination of dynamic topography (DT) is expected to quantify a realistic sea surface with respect to its vertical datum and in identifying sub-mesoscale features of ocean dynamics. This study explores a method that derives DT by using sa
Externí odkaz:
https://doaj.org/article/a37b385196d44153b2b7fc8f0bf2ee6d