Results 21 to 30 of about 285 (165)

ACCURACY ANALYSES OF B&H TRIGONOMETRIC NETWORK HEIGHTS BY GPS/EGM DATA [PDF]

Geodetski Glasnik, 2012
Analysis of the accuracy of the orthometric heights of the old trigonometric points are posible since the global accurate models of geoid as well as 3D coordinates in the global coordinate system became available.
Medžida Mulić, Eldin Đonlagić, Dževad Krdžalić, Asim Bilajbegović   +3 more
doaj   +1 more source

A Brief Overview to Theory of Heights

Communications, 2002
In various parts of the world many kinds of height systems have been formulated and practically used in the past. Nowadays, orthometric heights and normal heights are widely used.
Robert Tenzer
doaj   +1 more source

Refinement of the Kuwait geoid using the modified Stokes' kernel and Airy-Heiskanen isostatic reduction for GIS and geomatics applications

Egyptian Journal of Remote Sensing and Space Sciences, 2023
Orthometric heights are important for various applications such as GIS, geomatics, engineering, and geoscience. The ellipsoidal heights can be computed by Global Navigation Satellite System (GNSS) as an accurate, rapid, and efficient method for height ...
Ahmed Zaki, Hamad Al-Ajami, Mostafa Rabah, Ahmed Saber, Mohamed El-Ashquer   +4 more
doaj   +1 more source

Height Variations in the Mississippi River Basin From Daily Time-Varying Satellite Gravity Data and Hydrological Model

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
The orthometric height variation is evident through changes in the geoid and surface vertical displacements. Hydrological mass change can induce variations in geoid height and surface deformation, consequently resulting in fluctuations in orthometric ...
Song Zhang, Jinyun Guo, Tong Shi, Xiaotao Chang, Guangbin Zhu, Lingyong Huang, Heping Sun, Xin Liu   +7 more
doaj   +1 more source

A MATLAB GEODETIC SOFTWARE FOR PROCESSING AIRBORNE LIDAR BATHYMETRY DATA [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2015
The ability to build three-dimensional models through technologies based on satellite navigation systems GNSS and the continuous development of new sensors, as Airborne Laser Scanning Hydrography (ALH), data acquisition methods and 3D multi-resolution ...
M. Pepe, G. Prezioso
doaj   +1 more source

Efficient methods to convert LiDAR-derived ellipsoid heights to orthometric heights

International Journal of Applied Earth Observation and Geoinformation, 2012
Abstract Nowadays cartographic products are usually obtained from data sources which provide large amount of data. LiDAR acquisition system is a good example of the great quantity of data obtained, such as points with spatial coordinates in a determined reference system. The height of these points is usually related to a global ellipsoid (e.g. WGS84),
J.L. Pérez, A.T. Mozas, A. López, F.J. Aguilar, J. Delgado, I. Fernández, M.A. Aguilar   +6 more
openaire   +1 more source

Integration of UAV-derived digital elevation model and GNSS for orthometric height determination in urban mapping

Nova Geodesia
Accurate orthometric height information is critical for a variety of urban geospatial applications, including cadastral mapping, infrastructure development, and flood risk assessment.
Ibrahim O. RAUFU, Herbert TATA, Emmanuel B. ADEWOLE   +2 more
doaj   +1 more source

Unifying the Regional Height System Using Optic-Fiber Clock Network: A Simulation Test for Southeast Asia

IEEE Access, 2023
Orthometric height datum systems are critical in the geodetic community. Nonetheless, individual nations or local regions maintain their distinct height systems.
Anh The Hoang, Ziyu Shen, Wen-Bin Shen
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

Assessment of hybrid geoids in Chile and Spain, combining GGM and GNSS/Leveling observations

Geodesy and Geodynamics, 2021
This research presents the results for analyses done to five geopotential global models (GGM), comparing them with ground data from GNSS and leveling in heterogenic zones from the geodetic perspective, in Chile and Spain.
José Antonio Tarrío Mosquera, Marcelo Caverlotti Silva, Fernando Isla, Carlos Prado   +3 more
doaj   +1 more source