Results 121 to 130 of about 117,029 (163)

Horizontal and Vertical Geodetic Datums

1989
In conventional geodetic systems, locations of points on the surface of the earth may be defined either by means of natural (astronomic) or geometric (geodetic) coordinates. The natural coordinates, the astronomic latitude (Φ), longitude (Λ), and the orthometric (mean sea level height (H), being gravity dependent, are conventionally referenced to the ...
Ivan I. Mueller, Richard H. Rapp
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The Establishment of Geodetic Datum in Jiaonan City

Applied Mechanics and Materials, 2012
As to Jiaonan geodetic datum, third-order horizontal control network is established through GPS while third-order leveling network is established through electronic level. This paper illustrates how to process data so as to improve horizontal and vertical precision in the process of establishing third-order horizontal control network and elevation ...
De Bao Wang, Xue Ling Fang, Zhao Bo Xing, Jun Huang   +3 more
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A new analytical solution of nonlinear geodetic datum transformation

2010 18th International Conference on Geoinformatics, 2010
Nonlinear geodetic datum transformation is particular suitable for the case of large rotation angles, and has been an active area of research in recent years. In this paper, we propose a new analytical solution. The method expresses the scale parameter and translation parameters as the function of rotation matrix, through the derivation process.
Huaien Zeng, Qinglin Yi
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Impact of Satellite Altimetry on Geodetic Datum Definition

The Canadian Surveyor, 1974
Based 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
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Geodetic Datum Definition of the SAGA Network

2000
In cooperation with various organizations in the host countries, the GFZ Potsdam established the large-scale GPS network SAGA (South American Geodynamic Activities) covering Chile and parts of Argentina. The network consists of 215 sites including two sites on the islands Robinson Crusoe and San Felix that are part of the Nazca plate.
Detlef Angermann, Jürgen Klotz, Christoph Reigber   +2 more
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Time Evolution of a World Geodetic Datum

2002
Four 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 ...
E. W. Grafarend, A. A. Ardalan
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Errata/Addendum - Australian Geodetic Datum Technical Manual

Australian Surveyor, 1994
Abstract The Australian Geodetic Datum Technical Manual (Special Publication 10) was produced by the former National Mapping Council of Australia in 1984. Since that time this publication has served as the standard technical reference for the definition of the Australian Geodetic Datum (AGD), the Australian Map Grid (AMG) and the Australian Height ...
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Geodetic Boundary-Value Problems and the Height Datum Problem

2004
The 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
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Kansas and the Geodetic Datum of North America

Transactions of the Kansas Academy of Science (1903-), 1948
Kansas has the distinction of having within its borders two significant landmarks. One of these is the geographical center of the United States, the other is the Meades Ranch triangulation station or the geodetic datum known as the North American datum of 1927.
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The Geodetic Datum in New South Wales

Australian Surveyor, 1984
Abstract In 1969 the National Mapping Council resolved that “all future mapping at all scales” be based on the Australian Map Grid. The AMG is based on the Australian Geodetic Datum 1966, AGD66 which in turn is based on astronomical observations. In consequence of the resolution a massive effort was expended in New South Wales to establish all mapping ...
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