Results 11 to 20 of about 226 (172)

Improvement of GOCE-Based Global Geopotential Models for Gravimetric Geoid Modeling in Turkey

Geosciences, 2022
This study investigates the contribution of global geopotential models which are calculated with GOCE satellite mission data to the improvement of gravimetric geoid models in Turkey.
Mustafa Serkan Isik, Muhammed Raşit Çevikalp, Bihter Erol, Serdar Erol   +3 more
doaj   +1 more source

Implementation of CORS GNSS and local geoid for precise orthometric height determination in land subsidence region (a case study in Semarang City)

Journal of Geospatial Information Science and Engineering, 2019
Geoid has an important role in converting geodetic heights to physical heights, both in orthometric height system and normal height systems. At present, Semarang City already has gravimetric geoid with centimeter-level precision.
Laode M Sabri
doaj   +1 more source

High-Accuracy Quasi-Geoid Determination Using Molodensky’s Series Solutions and Integrated Gravity/GNSS/Leveling Data

Remote Sensing, 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 geoid
Dongmei Guo, Xiaodong Chen, Zhixin Xue, Huiyou He, Lelin Xing, Xian Ma, Xiaowei Niu   +6 more
doaj   +1 more source

Gravity data requirements for decimetre accuracy regional geoid using Stokes' Remove Compute Restore technique in Nigeria

Contributions to Geophysics and Geodesy, 2020
The need for dense and accurate gravity data cannot be overemphasised in the development of a precise gravimetric geoid model. Unfortunately, the field observations required are costly, and labour-intensive hence the need to ascertain via numerical ...
Joseph Olayemi ODUMOSU, Victor Chukwuemeka NNAM   +1 more
doaj   +1 more source

The Uganda Gravimetric Geoid Model 2014 Computed by The KTH Method

Journal of Geodetic Science, 2015
For many developing countries such as Uganda, precise gravimetric geoid determination is hindered by the low quantity and quality of the terrestrial gravity data.
Sjöberg L. E., Gidudu A., Ssengendo R.
doaj   +1 more source

Refinement of a gravimetric geoid model for Japan using GOCE and an updated regional gravity field model

Earth, Planets and Space, 2020
We developed a refined gravimetric geoid model for Japan on a 1 × 1.5 arc-minute (2 km) grid from a GOCE-based satellite-only global geopotential model and a regional gravity field model updated in this study.
Koji Matsuo, Yuki Kuroishi
doaj   +1 more source

Assessment of marine geoid models by ship-borne GNSS profiles

Geodesy and Cartography, 2017
Even though the entire Baltic Sea is included in previous geoid modelling projects such as the NKG2015 and EGG07, the accuracy of contemporary geoid models over marine areas remains unknown, presumably being offshore around 15–20 cm. An important part of
Sander Varbla, Artu Ellmann, Silja Märdla, Anti Gruno   +3 more
doaj   +1 more source

Gravimetric geoid modeling from the combination of satellite gravity model, terrestrial and airborne gravity data: a case study in the mountainous area, Colorado

Earth, Planets and Space, 2020
Constructing a high-precision and high-resolution gravimetric geoid model in the mountainous area is a quite challenging task because of the lack of terrestrial gravity observations, rough topography and the geological complexity.
Tao Jiang, Yamin Dang, Chuanyin Zhang
doaj   +1 more source

Accuracy Evaluation of Geoid Heights in the National Control Points of South Korea Using High-Degree Geopotential Model

Applied Sciences, 2020
Precise geoid heights are not as important for understanding Earth’s gravity field, but they are important to geodesy itself, since the vertical datum is defined as geoid in a cm-level accuracy.
Kwang Bae Kim, Hong Sik Yun, Ha Jung Choi   +2 more
doaj   +1 more source

Canadian gravimetric geoid model 2010

Journal of Geodesy, 2013
A new gravimetric geoid model, Canadian Gravimetric Geoid 2010 (CGG2010), has been developed to upgrade the previous geoid model CGG2005. CGG2010 represents the separation between the reference ellipsoid of GRS80 and the Earth’s equipotential surface of $$W_0=62{,}636{,}855.69 ...
Huang, J., Véronneau, M.
openaire   +3 more sources