geodetic measurements

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• Geodetic astronomy — is the application of astronomical methods into s and technical projects of geodesy.The most important topics are: * Establishment of geodetic datum systems (e.g. ED50) or at expeditions * apparent places of stars, and their proper motions *… …   Wikipedia

• Geodetic system — For other uses, see Geodetic. Geodesy Fundamentals …   Wikipedia

• Geodetic network — A geodetic network is a network of triangles which are measured exactly by techniques of terrestrial surveying or by satellite geodesy.In classical geodesy (up to the sixties) this is done by triangulation, based on measurements of angles and of… …   Wikipedia

• Astro-geodetic — methods are a group of important methods in geodesy, satellite techniques and astrometry.The classical astro geodetic leveling is a reasonably accurate method to derive the terrestrial geoid, provided a starting point is given. It combines the… …   Wikipedia

• World Geodetic System — The World Geodetic System defines a reference frame for the earth, for use in geodesy and navigation. The latest revision is WGS 84 dating from 1984 (last revised in 2004), which will be valid up to about 2010.Earlier schemes included WGS 72, WGS …   Wikipedia

• Earth Sciences — ▪ 2009 Introduction Geology and Geochemistry       The theme of the 33rd International Geological Congress, which was held in Norway in August 2008, was “Earth System Science: Foundation for Sustainable Development.” It was attended by nearly… …   Universalium

• Geodesy — (pronEng|dʒiːˈɒdɪsi [OED] ), also called geodetics, a branch of earth sciences, is the scientific discipline that deals with the measurement and representation of the Earth, including its gravitational field, in a three dimensional time varying… …   Wikipedia

• Figure of the Earth — An oblate spheroid Geodesy …   Wikipedia

• Meridian arc — In geodesy, a meridian arc measurement is a highly accurate determination of the distance between two points with the same longitude. Two or more such determinations at different locations then specify the shape of the reference ellipsoid which… …   Wikipedia

• Earth ellipsoid — The Earth ellipsoid especially the mean Earth ellipsoid is the mathematical figure of the Earth which is used as a reference frame for computations in geodesy, astronomy and the geosciences.It is a ellipsoid of rotation, whose short (polar) axis… …   Wikipedia

• space exploration — Investigation of the universe beyond Earth s atmosphere by means of manned and unmanned spacecraft. Study of the use of rockets for spaceflight began early in the 20th century. Germany s research on rocket propulsion in the 1930s led to… …   Universalium