Results 11 to 20 of about 5,019 (198)

Determination of geopotential of local vertical datum surface

Geo-Spatial Information Science, 2003
This paper first develops the approaches to determine the geopotential of the local mean sea level, and then investigates the offset of the 1985 vertical datum surface defined by the mean sea level of Yellow Sea at the Dagang Tide Gauge in Qingdao city using the developed approaches and GPS/leveling data.
Wei Ziqing, Jiao Wenhai
exaly   +2 more sources

Review of the Research Progress on Static Earth Gravity Field and Vertical Datum in China during 2019—2023 [PDF]

Journal of Geodesy and Geoinformation Science, 2023
The contribution presents the representative research progress on global static gravity field modeling, regional geoid/quasigeoid determination, vertical datum study, as well as the theory, algorithm and software for gravity field study in China from ...
Tao JIANG, Xinyu XU, Yonghai CHU, Taoyong JIN, Wei LIANG, Yihao WU, Yanguang FU, Yongqi ZHAO, Xinwei GUO
doaj   +1 more source

Estimation of Geopotential Value W₀ for the Geoid and Local Vertical Datum Parameters

Remote Sensing, 2023
Unification of the global vertical datum has been a key problem to be solved for geodesy over a long period, and the main challenge for unifying the global vertical datum system is to determine the geopotential value W0 of the geoid and to calculate the ...
Xinyu Liu, Shanshan Li, Jiajia Yuan, Diao Fan, Xuli Tan   +4 more
doaj   +1 more source

Accuracy assessment of quasi-seamless hydrographic separation models in Malaysian waters

Frontiers in Earth Science, 2023
The hydrographic survey reduction using ellipsoid has been available since the advent of the global navigation satellite system (GNSS), with a potential to streamline operation and enhance bathymetric output.
Mohammad Hanif Hamden, Ami Hassan Md Din, Ami Hassan Md Din, Nur Surayatul Atikah Alihan, Muhammad Faiz Pa’Suya, Dudy Darmawan Wijaya, Ahmad Sanusi Che Cob   +6 more
doaj   +1 more source

Application of 3D scanning technology in Royal Malaysian Air Force Industrial Revolution 4.0‐based aircraft maintenance

IET Networks, EarlyView., 2022
Abstract 3D scanning is rapidly becoming a key maintenance tool. Aerospace was a pioneer in adopting 3D scanning technology because aircraft manufacture and maintenance require precision. Monitoring deterioration, removing components for maintenance, and verifying covert operations are not practical or helpful without technology.
T. Nanthakumaran Thulasy, Puteri N. E. Nohuddin, Istas Fahrurrazi Nusyirwan, Mohd Hanafi Ahmad Hijazi, Musaddak Maher Abdul Zahra   +4 more
wiley   +1 more source

Estimation of Vertical Datum Parameters Using the GBVP Approach Based on the Combined Global Geopotential Models

Remote Sensing, 2020
Unification of the global vertical datum has been a key problem to be solved for geodesy over a long period, and the main challenge for a unified vertical datum system is to determine the vertical offset between the local vertical datum and the global ...
Panpan Zhang, Lifeng Bao, Dongmei Guo, Lin Wu, Qianqian Li, Hui Liu, Zhixin Xue, Zhicai Li   +7 more
doaj   +1 more source

Efficient modeling of height datum based on GIS [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2014
Since the proposal of Digital Earth, its research and applications are continuing to be deepened, and now Smart City is more indepth implementation of the Digital Earth.
Q. Qiao
doaj   +1 more source

Unification of a Global Height System at the Centimeter-Level Using Precise Clock Frequency Signal Links

Remote Sensing, 2023
The International Association of Geodesy (IAG) aims to establish the International Height Reference System (IHRS) as one of its primary scientific objectives. Central to the realization of the IHRS is global vertical datum unification, which requires the
Ziyu Shen, Wenbin Shen, Shuangxi Zhang, C. K. Shum, Tengxu Zhang, Lin He, Zhan Cai, Si Xiong, Lingxuan Wang   +8 more
doaj   +1 more source

THE IMPACT OF SEA LEVEL RISE ON GEODETIC VERTICAL DATUM OF PENINSULAR MALAYSIA [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016
Sea level rise is rapidly turning into major issues among our community and all levels of the government are working to develop responses to ensure these matters are given the uttermost attention in all facets of planning.
A. H. M. Din, I. C. Abazu, M. F. Pa’suya, K. M. Omar, A. I. A. Hamid   +4 more
doaj   +1 more source

Vertical datum and coordinate systems in Jordan

International Journal of Information Technology, Communications and Convergence, 2011
Advancement in satellites and telecommunication technologies has created a great interest in global positioning system (GPS) applications. The lack of a good geoid model for Jordan has limited the use of GPS applications. This has lead to refining the Jordanian geoid model for better GPS measurements in order to obtain reliable results in the triplet ...
Omar Al-Bayari, Balqies Sadoun
openaire   +1 more source