Results 221 to 230 of about 83,920 (263)
Some of the next articles are maybe not open access.
, 2014
With the advent of global navigation satellite systems (GNSSs), many national geodetic datums have been established with modern technology and referenced to a specific epoch of the international terrestrial reference frame (ITRF) definition.
Yuan-Hung Chiu, P. T. Shih
semanticscholar +1 more source
With the advent of global navigation satellite systems (GNSSs), many national geodetic datums have been established with modern technology and referenced to a specific epoch of the international terrestrial reference frame (ITRF) definition.
Yuan-Hung Chiu, P. T. Shih
semanticscholar +1 more source
THE DEFINITION AND ADJUSTMENT OF THE FIJI GEODETIC DATUM – 1986
Survey Review, 1989AbstractDeveloping nations which hold to a concept of private ownership or administration of land require survey and cadastral systems capable of supporting modern definition and information needs. Fiji is such a nation. This paper outlines the procedures followed in the definition and adjustment of the 1986 Fiji Geodetic Datum drawing particular ...
J. Maseyk, J. Hannah
openaire +2 more sources
Transformation of coordinates between two horizontal geodetic datums
Journal of Geodesy, 1996zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Petr Vaníček, Robin R. Steeves
openaire +2 more sources
Proposed absolute datum for Indian geodetic system [PDF]
Bulletin Géodésique, 1981 The international ellipsoid, 1924, was locally fitted to the Indian geoid in 1927. An attempt is here made to obtain the initial values for the Indian geodetic datum (I.G.D.) in absolute terms by gravimetric method using the available gravity material. The values obtained independently by the author’s least-squares solution technique, making use of the
J. C. Bhattacharji, P. K. Ray
openaire +1 more source
Time Evolution of a World Geodetic Datum
2002Four fundamental geodetic parameters, namely \(\{ GM,{W_0},\Omega ,{J_2}\} \) , determine a world geodetic datum. With respect to the Somigliana-Pizzetti Level Ellipsoid I International Reference Ellipsoid these fundamental parameters from best estimates at a reference epoch determine its semi-major axis a as well as its semi-minor axis b (or ...
Erik W. Grafarend, Alireza A. Ardalan
openaire +2 more sources
The use of space techniques for the connection of geodetic datums
Advances in Space Research, 1986Abstract Several techniques can provide now for ground stations tridimensional coordinates in global geodetic datum ranging from metre to centimetre. These techniques are basically : VLBI, Laser Ranging to the Moon or artificial satellites such as Lageos or Starlette, range and/or range-rate radio electric tracking of satellites such as Transit ...
Claude Boucher, Zuheir Altamimi
openaire +2 more sources
Impact of Satellite Altimetry on Geodetic Datum Definition
The Canadian Surveyor, 1974Based on results of the geodetic calibration and analysis of Skylab altimeter data, the concept of determination of the geoid in the oceans — the marine geoid — from satellite altimetry has been demonstrated. In principle, the satellite altimetry geoid should combine and improve on all the strong features of the gravimetric, astrogeodetic and ...
D. M. J. Fubara, A. G. Mourad
openaire +2 more sources
A MODEL FOR THE ESTABLISHMENT OF AN INTEGRATED REGIONAL GEODETIC DATUM
Survey Review, 1993Abstract A model for the establishment of an integrated geodetic datum covering a region is treated. The integrated geodetic datum is understood here to comprise the geoid, the reference ellipsoid, and the positional coordinates. A comprehensive unified solution model including the three parameters comprising the datum is considered.
openaire +2 more sources
THE 7-PARAMETER TRANSFORMATION TO A HORIZONTAL GEODETIC DATUM
Survey Review, 1998Abstract A modified adjustment model is developed for the computation of the 7 parameters of the 3D similarity transformation between geodetic reference frames. The model takes into account the varying quality of the coordinates of the control points.
openaire +2 more sources
Geodetic Boundary-Value Problems and the Height Datum Problem
2004The analysis of boundary-value problems has always been used in geodesy as a frame to understand the nature of the problem of determining the gravity disturbing potential, with respect to well-posedness (existence, uniqueness, continuous dependence of the solution on boundary data).
SACERDOTE, FAUSTO, F. Sansò
openaire +4 more sources