Results 281 to 290 of about 1,156,717 (317)
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Transformation of Ellipsoid Heights to Local Leveling Heights
Journal of Surveying Engineering, 2001The aim of this study is to evaluate the use of interpolation methods, which are used for digital terrain modeling, in transformation of Global Positioning System (GPS) ellipsoid heights to local heights. To test the interpolation methods used in this research, a set of GPS data collected in northern Turkey, 300 km from Istanbul, is used. The data were
M. Yanalak, O. Baykal
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An Ellipsoidal Luneburg Lens Antenna for Gain Enhancement and Beam Scanning
2021 7th International Conference on Computer and Communications (ICCC), 2021An ellipsoidal Luneburg lens antenna based on transformation optics is designed for gain enhancement and beam scanning. Compared with the traditional spherical Luneburg lens, the profile height is reduced. The transformed media parameters are improved to
Bochao Wang, Cun Wang, Qi Zhu
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Balanced ellipsoidal vortex equilibria in a background shear flow at finite Rossby number
Journal of Fluid Mechanics, 2021We consider a uniform ellipsoid of potential vorticity (PV), where we exploit analytical solutions derived for a balanced model at the second order in the Rossby number, the next order to quasi-geostrophic (QG) theory, the so-called QG+1 model.
W. McKiver
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Ellipsoidal process of the femoral head in Legg-Calvé-Perthes disease. Part I.
Journal of pediatric orthopedics. Part B, 2020BACKGROUND Legg-Calvé-Perthes disease (LCPD) often produces a residual deformity, typically consistent with coxa magna, coxa plana, and ellipsoidal shape.
J. Abril +3 more
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Gravity disturbances in regions of negative heights: A reference quasi-ellipsoid approach
Studia Geophysica et Geodaetica, 2008Compilation of the bathymetrically and topographically corrected gravity disturbance, the so called BT disturbance, for the purpose of gravity interpretation/inversion, is investigated from the numerical point of view, with special emphasis on regions of negative heights.
Vajda, Peter +5 more
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Assessment of Orthometric Height Derived from Levelling, GNSS and EGM2008 Geoid Model in Bangladesh
International Conference on the Software Process, 2020The use of GNSS to determine the orthometric height requires a geoid model which is used as a transformation linkage between ellipsoidal height and orthometric height. GNSS derived ellipsoidal height is purely mathematical, having no physical meaning. So,
Muhammad Abdul Alim Sikder +4 more
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An Ellipsoidal Plate Motion Model of the Indo‐Australian Tectonic Plate
Journal of Geophysical Research: Solid EarthWe present a class of “ellipsoidal rotation matrices” which can be used to characterize tectonic plate motion; where geocentric Cartesian coordinates travel along paths tangential to the ellipsoid.
J. McCubbine +3 more
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IEEE Transactions on Geoscience and Remote Sensing, 2019
Canopy height models (CHMs) were utilized to detect treetops and estimate individual-tree parameters. The treetop detection based on CHMs was affected by surface topography and crown characteristics.
S. Nie +8 more
semanticscholar +1 more source
Canopy height models (CHMs) were utilized to detect treetops and estimate individual-tree parameters. The treetop detection based on CHMs was affected by surface topography and crown characteristics.
S. Nie +8 more
semanticscholar +1 more source
Ellipsoidal droplet formation on anisotropic superhydrophobic copper surface
Surface Topography Metrology and Properties, 2019Superhydrophobic copper surfaces with contact angle (CA) as high as 158° are fabricated using the one-step process of femtosecond fiber laser writing. Low spacing between the laser scanning lines was chosen purposefully to observe the anisotropic surface
M. Taher +4 more
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Spatial Information Research, 2016
The Global Navigational Satellite Systems, particularly the Global Positioning System has emerged as state of the art technology for providing precise horizontal and vertical location of points on surface of the earth. The vertical location is with respect to the Reference spheroid and known as ellipsoidal height.
Michael Manisa +3 more
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The Global Navigational Satellite Systems, particularly the Global Positioning System has emerged as state of the art technology for providing precise horizontal and vertical location of points on surface of the earth. The vertical location is with respect to the Reference spheroid and known as ellipsoidal height.
Michael Manisa +3 more
openaire +1 more source