Results 291 to 300 of about 1,156,717 (317)

Improvements in the Ellipsoidal Heights of the Argentine Reference Frame

2002
In 1997, the classical argentine geodetic system Campo Inchauspe 69 was replaced by POSGAR 94 (POSiciones Geodesicas ARgentinas), a realization of WGS84 through GPS observations. After the SIRGAS reference frame was available, POSGAR was recomputed following the guidelines given by the SIRGAS working group II. The resulting new frame, termed POSGAR 98,
C. Brunini, J. Moirano, H. Drewes, K. Kaniuth   +3 more
openaire   +1 more source

The Effect of the MAPS Weather Model on GPS-Determined Ellipsoidal Heights

GPS Solutions, 2001
We investigated a current numerical weather model, known as MAPS (Mesoscale Analysis and Prediction System), to determine if it could precisely define the behavior of GPS signals in the tropospere, ultimately leading to improved GPS-determined ellipsoidal heights.
John Marshall, Mark Schenewerk, Richard Snay, Seth Gutman   +3 more
openaire   +1 more source

Wave Heights and Damping Coefficients for Half-Submerged Ellipsoids in Low-Frequency Sway and Yaw

Journal of Applied Mechanics, 1964
The authors consider the problem of an ellipsoid performing simple-harmonic swaying or yawing oscillations of small amplitude in the free surface of an ideal incompressible fluid, with gravity. The problem is examined in the limit of low frequency. The first nonzero term in the radiation pattern, which is a dipole term, and the damping coefficient, are
Lurye, J., Pinkus, O.
openaire   +1 more source

Expansion of geoid heights over a triaxial earth's ellipsoid into a spherical harmonic series

Studia Geophysica et Geodaetica, 1983
Выво¶rt;umся aл орumм ¶rt;ля вычuсленuя aрмонuческuх коэффuцuенmов в рaзложенuu рa¶rt;uус-векmорa еоu¶rt;a в ря¶rt; nо сферuческuм функцuям nуmем лuнеŭно о обрaщенuя aрмонuческо о ря¶rt;a ¶rt;ля еоnоmенцuaлa. Ощuбкa uз-зa лuнеaрuзaцuu nоря¶rt;кa кубa сжamuя Землu.
Karel Pěč, Zdeněk Martinec
openaire   +1 more source

Accurate Calculation of Geodetic Heights of a Celestial Body’s Surface Points Relative to the Triaxial Ellipsoid

Doklady Earth Sciences, 2019
The approximation of the Earth’s physical surface by a mathematical surface is commonly carried out by a sphere or an ellipsoid of revolution. A triaxial ellipsoid can be used in some cases. The geodetic heights of points of the Earth’s surface are commonly calculated by approximate methods using the relation between spatial rectangular coordinates x ...
M. E. Fleis, M. V. Nyrtsov, M. M. Borisov, A. I. Sokolov   +3 more
openaire   +1 more source

Experimental Research on Determining Orthometric Height from Ellipsoidal Height Differences on Open Pit Mining Applications

2015
Bu çalışmada; açık maden işletmelerinde Maden Kanunu ve Uygulama Yönetmeliği (MKUY) kapsamında ve işletmenin avan proje uygulamalarında gereksinim duyulan ortometrik yükseklik verilerinin, GNSS ölçmeleri ile elipsoidal yükseklik farklarından pratik olarak elde edilmesine ilişkin olarak teorik ve deneysel bir araştırma gerçekleştirilmiştir.
AKÇIN, Hakan, ŞEKERTEKİN, Aliihsan
openaire   +1 more source

Ellipsoidal Heights and Engineering Applications: Research with Real Data Proves They Will Work!

Journal of Surveying Engineering, 2007
As Global Positioning System GPS surveying techniques started showing promise of high accuracy geodetic positioning in the early 1990s, a few open-minded geodesists realized the possibility of using ellipsoidal heights in place of orthometric heights.
openaire   +1 more source

Accuracy of GNSS RTK/NRTK height difference measurement

Applied Geomatics, 2022
Robert Krzyżek, J. Kudrys
semanticscholar   +1 more source

A Comparison of the Existing Ellipsoidal to Orthometric Height Transformation Models

European Journal of Science, Innovation and Technology
Geodetic height transformations play a crucial role in bridging the gap between ellipsoidal and orthometric height systems, facilitating accurate elevation data integration across diverse applications. This study presents a comprehensive comparison of existing ellipsoidal to orthometric height transformation models, aiming to assess their performance ...
SINA, Bledar, HASKO, Gezim
openaire   +1 more source

A global representation of ellipsoidal heights — geoidal undulations or topographic heights — in terms of orthonormal functions

manuscripta geodaetica, 1992
Erik W. Grafarend, Johannes Engels
openaire   +2 more sources