In geodesy, the Hayford ellipsoid is a reference ellipsoid named after the American geodesist John Fillmore Hayford (1868–1925), which was introduced...
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Bessel ellipsoid of 1841, the international Hayford ellipsoid of 1924, and (for GPS positioning) the WGS84 ellipsoid. There are two types of ellipsoid: mean...
19 KB (2,379 words) - 03:42, 10 July 2024
isostasy and the construction of a reference ellipsoid for approximating the figure of the Earth. Hayford was elected to the United States National Academy...
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Clarke ellipsoid of 1880. After the arrival of the geophysical reduction techniques many projects used other examples such as the Hayford ellipsoid of 1910...
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headed by the late Carlos Ibañez Ibáñez de Ibero (1825–1891). Until Hayford ellipsoid was calculated in 1910, vertical deflections were considered as random...
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axis (equatorial radius) of the Hayford ellipsoid and that of the modern WGS84 ellipsoid is 251 m; for Helmert's ellipsoid it is only 63 m. A more recent...
20 KB (3,520 words) - 10:23, 15 July 2024
In the mid-1800s the Bessel ellipsoid of 1841 or the Clarke ellipsoid of 1866 were widely used; the Hayford ellipsoid of 1910 may later have been used...
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which have their own datums. It used the International Ellipsoid of 1924 ("Hayford-Ellipsoid" of 1909) (radius of the Earth's equator 6378.388 km, flattening...
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normally refers to the Bessel ellipsoid. A further datum of interest was ED50 (European Datum 1950) based on the Hayford ellipsoid. ED50 was part of the fundamentals...
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Gauss–Boaga projection is a map projection used in Italy that uses a Hayford ellipsoid. The projection is named after Carl Friedrich Gauss and Giovanni Boaga...
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and a Scale Factor at Origin (mo) = 0.9998. The JTM is based on the Hayford ellipsoid adopted by the IUGG in 1924. No transformation parameters are presently...
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International Geodesy), and a series of global ellipsoids of the Earth were derived (e.g., Helmert 1906, Hayford 1910 and 1924). A unified geodetic system...
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Earth, the reference ellipsoid is the International Reference Ellipsoid, and the value of gravity predicted for points on the ellipsoid is the normal gravity...
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work would be that by John Fillmore Hayford, which relied mainly on the North American national network. His ellipsoid was adopted in 1924 by the International...
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(usually termed Thomas formulae in the United States.) ellipsoid: International 1924 (a.k.a. Hayford 1909) major axis: 6 378 388.000 minor axis: 6 356 911...
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(United States) Buckminster Fuller, 1895–1983 (United States) John Fillmore Hayford, 1868–1925 (United States) Veikko Aleksanteri Heiskanen, 1895–1971 (Finland/United...
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global ellipsoid in 1906 with an accuracy of 100 meters (0.002 percent of the Earth's radii). The US geodesist Hayford derived a global ellipsoid in ~1910...
100 KB (12,817 words) - 07:14, 18 August 2024