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The present extent of the astro-geodetic geoid and the geodetic world datum derived from it
Abstract Since the presentation of “The Hough Ellipsoid” at the Toronto meeting in 1957, the astro-geodetic geoid was extended into the Caribbean, India, and Japan. The two hemispheres were tentatively connected across the North Atlantic by a reasonable assumption about the unknown geoid profile there. A series of solutions for a world ellipsoid and world datum was made, with and without enforcing the flattening of 1/298.3, with and without gravimetric orientation. The resulting ellipsoids are very small, with an equatorial radius of around 6378 160 m. The agreement between astro-geodetic and gravimetric geoid profiles is greatly improved by the small ellipsoid.
The present extent of the astro-geodetic geoid and the geodetic world datum derived from it
Abstract Since the presentation of “The Hough Ellipsoid” at the Toronto meeting in 1957, the astro-geodetic geoid was extended into the Caribbean, India, and Japan. The two hemispheres were tentatively connected across the North Atlantic by a reasonable assumption about the unknown geoid profile there. A series of solutions for a world ellipsoid and world datum was made, with and without enforcing the flattening of 1/298.3, with and without gravimetric orientation. The resulting ellipsoids are very small, with an equatorial radius of around 6378 160 m. The agreement between astro-geodetic and gravimetric geoid profiles is greatly improved by the small ellipsoid.
The present extent of the astro-geodetic geoid and the geodetic world datum derived from it
Fischer, Irène (author)
1961
Article (Journal)
Electronic Resource
English
Geodäsie , Geometrie , Geodynamik , Mathematik , Mineralogie
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