Results 211 to 220 of about 17,261 (248)
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Positioning of Horizontal Geodetic Datums
The Canadian Surveyor, 1974This paper treats the classical problem of positioning horizontal geodetic datums. By ‘classical problem’ we mean the problem we face when dealing with the usual horizontal control networks, as opposed to some of the more modern ideas, such as the use of geocentric coordinates, or the ideas of Hotine [1959, 1969].
D. E. Wells, Petr Vaníček
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The Canadian Surveyor, 1973
Because of 1) the appreciable distortions in the system of coordinates known as the 1927 North American Datum, 2) the definition of oil and gas exploration permit areas and offshore boundaries in t...
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Because of 1) the appreciable distortions in the system of coordinates known as the 1927 North American Datum, 2) the definition of oil and gas exploration permit areas and offshore boundaries in t...
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Geodetic Datum Definition of the SAGA Network [PDF]
, 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.
Christoph Reigber +2 more
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Geodetic Datum and Geodetic Control Networks
2014To measure terrain, surface features, position coordinates, heights, and gravity values at points on the Earth’s surface, there need to be corresponding reference points or surfaces (also known as datum points or surfaces), namely geodetic datums, to which surveying and mapping results are referred. Geodetic datums consist chiefly of coordinate datums (
Shubo Qiao, Yunying Qu, Zhiping Lu
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Establishment and Maintenance of Taiwan Geodetic Datum 1997 [PDF]
Journal of Surveying Engineering, 2001 A well-defined three-dimensional geodetic datum is essential to the development of a modernized nation. Also, it is of importance for the geodetic datum to be sufficiently accurate at all times to meet the requirements of many scientific and engineering applications, such as crustal deformation monitoring, national charting and mapping, cadastral ...
Ching-Liang Tseng, Ming Yang, Jyh-Yih Yu
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The Establishment of Geodetic Datum in Jiaonan City
Applied Mechanics and Materials, 2012As 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 ...
Jun Huang +3 more
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Horizontal and Vertical Geodetic Datums
1989In 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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Geodetic Datum Transformation and Inverse Transformation
Applied Mechanics and Materials, 2014Geodetic datum transformation and inverse transformation are very basic tasks in geodesy, and surveying engineering, etc. Considering the rotation angles are in seconds, the rotation matrix is simplified, and then the observation equation is easily linearized and solved by least squares technique. The inverse transformation is derived explicitly, which
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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
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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
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