Results 21 to 30 of about 6,935 (225)

Pemodelan Quasigeoid Lokal Bali dari Data Gayaberat Teristris Menggunakan Formula Hotine

, 2023
Quasigeoid lokal pulau Bali di definisikan menggunakan persamaan Hotine. Data yang digunakan kombinasi data gangguan gayaberat hasil pengukuran terestris, gayaberat lautDTU17, EGM2008 derajat 360 dan SRTM15dengan berbagai variasi jarak spheris diuji ...
Heiani, Leni Sophia, Putra, Widy, Triarahmadhana, Bagas   +2 more
core   +1 more source

Determination of the Orthometric Height inside Mosul University campus by using GPS data and EGM96 Geoid Model [PDF]

مجلة التربية والعلم, 2008
In the geodesy science, the heights determined by Global Positioning System (GPS) measurements are related to the perpendicular distance above the reference ellipsoid, while heights of Mean Sea Level (MSL) are determined with respect to geoid.
Sabah Ali
doaj   +1 more source

Unified Land–Ocean Quasi-Geoid Computation from Heterogeneous Data Sets Based on Radial Basis Functions

Remote Sensing, 2022
The determination of the land geoid and the marine geoid involves different data sets and calculation strategies. It is a hot issue at present to construct the unified land–ocean quasi-geoid by fusing multi-source data in coastal areas, which is of great
Yusheng Liu, Lizhi Lou
doaj   +1 more source

Analysis of the merged quasi-geoid of neighbouring areas

Geodesy and Geodynamics, 2018
Employing the merged quasi-geoid, we analyses the causes of systematic errors in modelling of quasi-geoid of neighbouring areas in the paper, and the efficient method is introduced to improve the accuracy of quasi-geoid.
Chunxi Guo, Jianliang Nie, Bin Wang, Jie Tian, Guangwei Jiang, Junying Chen, Shijuan Zhang   +6 more
doaj   +1 more source

Polynomial interpolation methods in development of local geoid model

Egyptian Journal of Remote Sensing and Space Sciences, 2018
In geodesy three surfaces, the physical surface of the earth, the geoid and the reference ellipsoid are encountered giving rise to orthometric height (h), the ellipsoidal height (H) and the geoidal separation (N).
Rabindra Kumar Das, Sailesh Samanta, Sujoy Kumar Jana, Robert Rosa   +3 more
doaj   +1 more source

ESTABLISHMENT OF NEW FITTED GEOID MODEL IN UNIVERSITI TEKNOLOGI MALAYSIA [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2018
The purpose of this study is to produce fitted geoid for Universiti Teknologi Malaysia (UTM), Johor Bahru by using precise levelling and 3D GNSS control network technique.
M. K. Ismail, A. H. M. Din, A. H. M. Din, A. H. M. Din, M. N. Uti, A. H. Omar   +5 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

DFHRS-based computation of quasi-geoid of Latvia

Geodesy and Cartography, 2013
In geodesy, civil engineering and related fields high accuracy coordinate determination is needed, for that reason GNSS technologies plays important role.
Inese Janpaule, Reiner Jäger Jäger, Ghadi Younis, Jānis Kaminskis, Ansis Zariņš   +4 more
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

Geoid model validation and topographic bias

Journal of Geodetic Science, 2022
Recently a number of geoid campaigns were performed to verify different types of geoid and quasigeoid modeling techniques. Typically, GNSS-leveling was employed as an independent method, but in some cases zenith camera astronomic deflection data were ...
Sjöberg Lars E.
doaj   +1 more source