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Relevant bibliographies by topics / Local geoid

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Academic literature on the topic 'Local geoid'

Author: Grafiati

Published: 4 June 2021

Last updated: 27 July 2025

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Journal articles on the topic "Local geoid"

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IBRAHIM YAHAYA, Salissou, El Hassan EL BRIRCHI, and Driss EL AZZAB. "IMPACT OF DATUM TRANSFORMATION ON LOCAL VARIATIONS OF GEOMETRIC GEOID IN NIGER." Geodesy and cartography 43, no. 4 (2017): 147–57. http://dx.doi.org/10.3846/20296991.2017.1412615.

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In this study, we have conducted an investigation on the impact of the coordinates’ transformation on local variations of geometric geoid. The study area is limited by 1°43′12″ to 4°00′37″ East and 13°01′57″ to 14°31′20″ North in the southwest of the Niger Republic. We used 39 network GPS/levelling points established by the Japan International Cooperation Agency (JICA) and the National Geographic Institute of Niger (IGNN), including the DOPPLER point ANG302/no.65. Using other coordinates of point no. 65 provided by IGNN, we transformed the points into WGS84 and computed a new geometric geoid

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Eteje, S. O., O. F. Oduyebo, and M. N. Ono. "Comparison of Three Gravimetric-Geometric Geoid Models for Best Local Geoid Model of Benin City, Nigeria." International Journal of Advanced Engineering Research and Science (IJAERS) 6, no. 12 (2019): 261–72. https://doi.org/10.22161/ijaers.612.23.

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The conversion of geometric as well as ellipsoidal heights from GNSS observations to practical heights for engineering constructions has necessitated the determination of the local geoid model of areas. Benin City is a developing area which requires a local geoid model for conversion of geometric heights to orthometric heights for physical developments in the area. This paper is on the best local geoid model of Benin City, Nigeria by comparing three gravimetric-geometric geoid models of the study area. GNSS and gravimetric observations were carried out on 49 points to respectively obtain their

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Udama, Zahroh Arsy, Ira Mutiara Anjasmara, Arisauna Maulidyan Pahlevi, and Anas Sharafeldin Mohamed Osman. "Geoid Modelling of Kalimantan Island using Airborne Gravity Data and Global Geoid Model (EGM2008)." IOP Conference Series: Earth and Environmental Science 936, no. 1 (2021): 012029. http://dx.doi.org/10.1088/1755-1315/936/1/012029.

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Abstract The availability of geoids, especially in survey and mapping activities, is useful for transforming the geometric heights obtained from observations of the Global Navigation Satellite System (GNSS) into orthometric heights that have real physical meanings such as those obtained from waterpass measurements. If a geoid is available, the orthometric heights of points on earth can be determined using the GNSS heighting method. The use of modern survey and mapping instruments based on satellite observations such as GNSS is more efficient in terms of time, effort, and cost compared to the a

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ETEJE, S. O., O. F. ODUYEBO, and S. A. OLULADE. "Procedure for the Determination of Local Gravimetric-Geometric Geoid Model." International Journal of Advances in Scientific Research and Engineering (ijasre) 4, no. 8 (2018): 206–14. https://doi.org/10.5281/zenodo.2525708.

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As the surface adopted for geodetic computation is a mathematical surface which is different from the physical surface, the geoid adopted as a reference for the vertical coordinate system, the ellipsoidal heights obtained from GPS observation are transformed to practical heights known as orthometric heights. The transformation of the ellipsoidal heights to orthometric heights requires the knowledge of the geoid-ellipsoid separation at the point of observation. Since the geometric method requires the computation of geoid heights of points from GPS observation and geodetic leveling carried out o

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Oduyebo, O. F., M. N. Ono, and S. O. Eteje. "Practical Local Geoid Modelling of Benin City, Nigeria from Gravimetric Observations Using the Modified Stokes Integral." International Journal of Advanced Engineering, Management and Science (IJAEMS) 5, no. 12 (2019): 608–17. https://doi.org/10.22161/ijaems.512.1.

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The geometric heights obtained from GNSS observations cannot be used for engineering works as they are not reduced to the geoid. This study presents practical local geoid modelling from gravimetric observations using the modified Stokes integral for engineering applications in Benin City. A total of 52 points were observed with GNSS receivers and a gravimeter to respectively obtain their positions and absolute gravity values. The theoretical gravity values of the points were computed on the Clarke 1880 ellipsoid to obtain their local gravity anomalies. The modified Stokes integral was applied

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Kao, Szu-Pyng, Fang-Shii Ning, Chao-Nan Chen, and Chia-Ling Chen. "USING PARTICLE SWARM OPTIMIZATION TO ESTABLISH A LOCAL GEOMETRIC GEOID MODEL." Boletim de Ciências Geodésicas 23, no. 2 (2017): 327–37. http://dx.doi.org/10.1590/s1982-21702017000200021.

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There exist a number of methods for approximating the local geoid surface and studies carried out to determine a local geoid. In this study, performance of geoid by PSO method in modeling local geoid was presented and analyzed. The ellipsoidal heights (h), derived from GPS observations, and known orthometric heights from first-order benchmarks were first used to create local geometric geoid model, then the PSO method was used to convert ellipsoidal heights into orthometric heights (H). The resulting values were used to compare between the spirit leveling and GPS methods. The adopted PSO method

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Soycan, Metin. "Improving EGM2008 by GPS and leveling data at local scale." Boletim de Ciências Geodésicas 20, no. 1 (2014): 3–18. http://dx.doi.org/10.1590/s1982-21702014000100001.

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The development of the Earth Gravitational Model 2008 (EGM2008) model is a significant contribution for modeling the Earth's gravity and geoid. Recently, it can be confidently used versus geometric models following a simple refinement procedure. Several studies show that, EGM2008 can reach the accuracy of regional or local geoid models after modeling the differences between the GPS-leveling geoid heights and EGM2008 derived geoid heights at identified control points. The study focuses on a corrector surface fitting (CSF) approach based on radial basis functions (RBF) as improvement procedure f

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Truong, Nguyen Ngoc, and Tran Van Nhac. "Determination of the constant W_o for local geoid of Vietnam and it’s systematic deviation from the global geoid." Tạp chí Khoa học và Công nghệ biển 17, no. 4B (2017): 138–44. http://dx.doi.org/10.15625/1859-3097/17/4b/13001.

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Constant Wo, defining the geoid, has important applications in the area of physical geodesy. With the development of artificial Earth satellite, constant Wo for the global geoid approximating the oceans on Earth can be calculated from an expansion of spherical harmonics - Stokes constants determined by observation of perturbations in artificial satellite’s orbits. However, the Stokes constants are limited, therefore the geoid constant Wo could not be calculated for local geoid (state geoid) from the mentioned expansion of spherical harmonics. In this paper, we present a method to determine the

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TATA, Herbert, and Olamilekan Babatunde OMODEJO. "Enhancing geoid modelling for accurate local geoid determination in Lagos Island: A combined GNSS and levelling approach, Eti-Osa Local Government Area, Lagos State, Nigeria." Contributions to Geophysics and Geodesy 54, no. 4 (2024): 301–19. https://doi.org/10.31577/congeo.2024.54.4.1.

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Lagos Island faces challenges from coastal hazards and inadequate infrastructure, making precise geoid modelling essential for urban planning, flood risk assessment, and infrastructure development. This study addresses discrepancies in height references and emphasizes the need for accurate geoid data to support spatial planning and disaster management. The main objective is to create a geoid model tailored to Lagos Island's unique geography and infrastructure needs. The research combines the Global Navigation Satellite System (GNSS) and levelling data which created a reliable framework for det

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Erol, Serdar, Emrah Özögel, Ramazan Alper Kuçak, and Bihter Erol. "Utilizing Airborne LiDAR and UAV Photogrammetry Techniques in Local Geoid Model Determination and Validation." ISPRS International Journal of Geo-Information 9, no. 9 (2020): 528. http://dx.doi.org/10.3390/ijgi9090528.

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This investigation evaluates the performance of digital terrain models (DTMs) generated in different vertical datums by aerial LiDAR and unmanned aerial vehicle (UAV) photogrammetry techniques, for the determination and validation of local geoid models. Many engineering projects require the point heights referring to a physical surface, i.e., geoid, rather than an ellipsoid. When a high-accuracy local geoid model is available in the study area, the physical heights are practically obtained with the transformation of global navigation satellite system (GNSS) ellipsoidal heights of the points. B

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Dissertations / Theses on the topic "Local geoid"

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Garcia, Ramon V. "Local geoid determination from GRACE mission /." The Ohio State University, 2001. http://rave.ohiolink.edu/etdc/view?acc_num=osu1486398195325232.

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Serpas, Juan Gilberto. "Local and regional geoid determination from vector airborne gravimetry." The Ohio State University, 2003. http://rave.ohiolink.edu/etdc/view?acc_num=osu1066757143.

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Nyamangunda, Patrick. "Towards a 10cm local gravimetric geoid for Zimbabwe using FFT." Thesis, University College London (University of London), 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.301119.

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Kamarudin, Md Nor. "Local geoid determination from a combination of gravity and GPS data." Thesis, University of Newcastle Upon Tyne, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.363535.

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Odera, Patroba Achola. "Precise determination of a local geoid model and a reference height system for the establishment of a modern vertical geodetic datum." 京都大学 (Kyoto University), 2012. http://hdl.handle.net/2433/161036.

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Pessoa, Luciano Montenegro da Cunha. "Geoide gravimetrico local em area da Bacia do Parana." reponame:Repositório Institucional da UFPR, 1997. http://hdl.handle.net/1884/49683.

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Orientador: François Albert Rosier<br>Dissertação (mestrado) - Universidade Federal do Paraná<br>Resumo: O presente trabalho apresenta um modelo geoidal de âmbito local para a região definida geograficamente pelos paralelos - 24° 30' e - 26° 30' e meridianos - 50° 30' e - 52° 30' inserida na bacia sedimentar do Paraná, resultante da combinação de dados gravimétricos com o modelo do geopotencial OSU91A e de um modelo topográfico de alta resolução. A formulação matemática utilizada para a obtenção das ondulações geoidais foi a integral de Stokes, através da técnica remove-restore com modificação

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Galdino, Carlos Alberto Pessoa Mello, and Gunter Seeber. "Determinação de desniveis por GPS para aplicações em engenharia atraves da definição dos parametros de um geoide local." reponame:Repositório Institucional da UFPR, 1996. http://hdl.handle.net/1884/36948.

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Orientador: Gunter Seeber<br>Dissertação (mestrado) - Universidade Federal do Parana<br>Resumo: Com a evolução tecnológica, o franco desenvolvimento da Geodésia Satelital, a redução dos custos de equipamentos, de custos operacionais, da rapidez no fornecimento dos resultados e precisão compatível, o GPS ganhou definitivamente seu espaço na área de levantamentos geodésicos e topográficos tradicionais. Dentro desta ótica, o nosso trabalho procura contribuir com informações relativas ao reconhecimento, rastreamento, cálculo e ajustamento de observações GPS sobre Referências de Nível (RN’s), objet

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Vu, Dinh Toan. "Unification du système de hauteur et estimation de la structure lithosphérique sous le Vietnam utilisant la modélisation du champ de gravité et du quasigéoïde à haute résolution." Thesis, Toulouse 3, 2021. http://www.theses.fr/2021TOU30050.

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Le but de ce travail était double. La première partie a été consacrée à la recherche de la taille et de la forme de la Terre au Vietnam à travers la détermination d'un modèle quasigeoïde gravimétrique local. La deuxième partie consistait à étudier la structure intérieure de la Terre sous le Vietnam en déterminant la profondeur du Moho et de la limite entre Lithosphère-Asthénosphère. Pour le premier objectif, un modèle quasigeoïde gravimétrique à haute résolution pour le Vietnam et ses environs a été déterminé sur la base de nouvelles données issues de campagnes gravimétriques terrestres en com

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Ma, Wei-Ming. "Local geoid determination using the Global Positioning System." Thesis, 1988. http://hdl.handle.net/10945/23288.

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Shih, Yu-Sheng, and 施煜昇. "A Study of Comparison of Fitting Methods by Terrain Complex Local Geoid Model." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/v7wx8q.

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Books on the topic "Local geoid"

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Ma, Wei-Ming. Local geoid determination using the Global Positioning System. 1988.

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Morozova, Katerina. Parameter Estimation on Hybrid Zenith Camera and Gravimeter Data for Integrated Gravity Field and Geoid Determination Based on Spherical-cap-harmonics Modelling. RTU Press, 2022. http://dx.doi.org/10.7250/9789934228179.

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The main objective of the Doctoral Thesis is to develop a new solution for the Earth gravity field determination based on spherical-cap-harmonic modelling, using both vertical deflection and gravimetric hybrid data. The values of vertical deflections caused by gravity field anomaly are computed using digital zenith camera. It is a new kind of astrogeodetic instrument employing recent advancements in several areas of technology. The intention is to use vertical deflections along with GNSS/levelling and gravity data to improve the local quasi-geoid model including both physical and geometrical d

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Book chapters on the topic "Local geoid"

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Wang, Yan Ming, Jianliang Huang, Tao Jiang, and Michael G. Sideris. "Local Geoid Determination." In Encyclopedia of Geodesy. Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-02370-0_53-1.

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Douglas, W., and P. L. S. Black. "Local Geoid Models — Practical Considerations." In International Association of Geodesy Symposia. Springer Berlin Heidelberg, 2002. http://dx.doi.org/10.1007/978-3-662-04683-8_42.

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Tavasci, Luca, Enrica Vecchi, and Stefano Gandolfi. "Definition of the Local Geoid Undulation Using Non-contemporary GNSS-Levelling Data on Subsidence Area: Application on the Adriatic Coastline." In Communications in Computer and Information Science. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-94426-1_19.

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AbstractThe knowledge of the so-called geoid undulation, which represents the height of the geoid above a reference ellipsoid, is a fundamental step to link ellipsoidal heights measured using satellite systems and orthometric heights. Several geoid models are available at the time both at the national or global scale, which can be used for the purpose. Another way to define the geoid undulation is to perform joint measures with GNSS and spirit levelling over common benchmarks. This requires onerous measurements that is seldom possible to perform due to their cost. In this work, we evaluated th

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Herceg, Matija, Per Knudsen, and Carl Christian Tscherning. "GOCE Data for Local Geoid Enhancement." In Gravity, Geoid and Height Systems. Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-10837-7_17.

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Chen, Junyong. "The Local Geoid Determination in China." In International Association of Geodesy Symposia. Springer Berlin Heidelberg, 1995. http://dx.doi.org/10.1007/978-3-642-79721-7_47.

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Schwarz, K. P., and Y. C. Li. "Accuracy and Resolution of the Local Geoid Determined from Airborne Gravity Data." In Gravity, Geoid and Geodynamics 2000. Springer Berlin Heidelberg, 2000. http://dx.doi.org/10.1007/978-3-662-04827-6_40.

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Fotiou, A., V. N. Grigoriadis, C. Pikridas, D. Rossikopoulos, I. N. Tziavos, and G. S. Vergos. "Combination Schemes for Local Orthometric Height Determination from GPS Measurements and Gravity Data." In Gravity, Geoid and Earth Observation. Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-10634-7_40.

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Weigelt, M., N. Sneeuw, and W. Keller. "Evaluation of EGM2008 by Comparison with Global and Local Gravity Solutions from CHAMP." In Gravity, Geoid and Earth Observation. Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-10634-7_66.

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Gilardoni, M., M. Reguzzoni, and D. Sampietro. "Using GOCE to Straighten and Sew European Local Geoids: Preliminary Study and First Results." In Gravity, Geoid and Height Systems. Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-10837-7_29.

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Jekeli, C., and R. Garcia. "Local geoid determination with in situ geopotential data obtained from satellite-to-satellite tracking." In Gravity, Geoid and Geodynamics 2000. Springer Berlin Heidelberg, 2001. http://dx.doi.org/10.1007/978-3-662-04827-6_20.

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Conference papers on the topic "Local geoid"

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Shuwei, Wang, Li Fei, Shu Chanfang, and Ke Baogui. "Clustering Analysis of Gravity Data to Compute Local Geoid." In 2008 International Workshop on Geoscience and Remote Sensing (ETT and GRS). IEEE, 2008. http://dx.doi.org/10.1109/ettandgrs.2008.45.

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Patalov, Stoyan. "APPLICATION OF RADIAL BASIS FUNCTIONS IN LOCAL GEOID DETERMINATION." In 20th International Multidisciplinary Scientific GeoConference Proceedings SGEM 2020. STEF92 Technology, 2020. http://dx.doi.org/10.5593/sgem2020/2.2/s09.003.

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Heliani, Leni S. "Evaluation of global geopotential model and its application on local geoid modelling of Java Island, Indonesia." In PROCEEDINGS OF THE 12TH INTERNATIONAL CONFERENCE ON SYNCHROTRON RADIATION INSTRUMENTATION – SRI2015. Author(s), 2016. http://dx.doi.org/10.1063/1.4958534.

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Sanlioglu, Ismail. "A COMPARISON WITH ORTHOMETRIC HEIGHTS OBTAINED BY REAL TIME KINEMATIC AND BY LOCAL GEOID MODEL, CASE STUDY IN ADANA." In SGEM2011 11th International Multidisciplinary Scientific GeoConference and EXPO. Stef92 Technology, 2011. http://dx.doi.org/10.5593/sgem2011/s07.101.

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Heliani, Leni S., and Ramdhan Hidayat. "Evaluation of the influence of the Global Geopotential Model resolution on the accuracy of local geoid models: (Case study: DI Yogyakarta Province)." In 2016 6th International Annual Engineering Seminar (InAES). IEEE, 2016. http://dx.doi.org/10.1109/inaes.2016.7821932.

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Darmansyah Putra Perdana, Andri, and Leni Sophia Heliani. "Evaluation of global geopotential model and digital terrain model to the accuration of local geoid model: Case study in work field of PT Pertamina EP Asset 4 Field Cepu." In 2017 7th International Annual Engineering Seminar (InAES). IEEE, 2017. http://dx.doi.org/10.1109/inaes.2017.8068576.

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Tsanovski, Yuri. "METHODOLOGY FOR ACCOUNTING DISPLACEMENTS OF THE OUTPUT COORDINATES FROM THE STATIC STATE GPS NETWORK IN GEODETIC PRACTICE." In 23rd SGEM International Multidisciplinary Scientific GeoConference 2023. STEF92 Technology, 2023. http://dx.doi.org/10.5593/sgem2023/2.1/s09.29.

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In geodetic practice, the definition of spatial objects in relation to a uniform and reliable coordinate system is of paramount importance. In the Republic of Bulgaria by the Decree of the Council of Ministers No 153 of 29 July 2010 and Regulation No 2 of 30 July 2010 on the Definition and Maintenance of the Bulgarian Geodetic System 2005 (BGS2005). The points of the State GPS network (SGPSN), defined in the ETRS89 coordinate system, realization ETRF2000, epoch 2005.0 represent a realization of BGS2005 and their invariance over time is compromised due to the country's location, namely in the p

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