Geodesy is the science of measuring and representing the geometry, gravity, and spatial orientation of the Earth in temporally varying 3D. It is called planetary geodesy when studying other astronomical bodies, such as planets or circumplanetary systems.
The World Geodetic System (WGS) is a standard used in cartography, geodesy, and satellite navigation including GPS. The current version, WGS 84, defines an Earth-centered, Earth-fixed coordinate system and a geodetic datum, and also describes the associated Earth Gravitational Model (EGM) and World Magnetic Model (WMM). The standard is published and maintained by the United States National Geospatial-Intelligence Agency.
Reino Antero Hirvonen (1908–1989) was a famous Finnish physical geodesist, also well known for contributions in mathematical and astronomical geodesy.
Satellite geodesy is geodesy by means of artificial satellites—the measurement of the form and dimensions of Earth, the location of objects on its surface and the figure of the Earth's gravity field by means of artificial satellite techniques. It belongs to the broader field of space geodesy. Traditional astronomical geodesy is not commonly considered a part of satellite geodesy, although there is considerable overlap between the techniques.
A geodetic control network is a network, often of triangles, which are measured precisely by techniques of control surveying, such as terrestrial surveying or satellite geodesy.
Geodetic astronomy or astronomical geodesy (astro-geodesy) is the application of astronomical methods into geodetic networks and other technical projects of geodesy.
A balloon satellite, sometimes referred to as a "satelloon", is inflated with gas after it has been put into orbit.
Stellar triangulation is a method of geodesy and of its subdiscipline space geodesy used to measure Earth's geometric shape. Stars were first used for this purpose by the Finnish astronomer Yrjö Väisälä in 1959, who made astrometric photographs of the night sky at two stations together with a lighted balloon probe between them.
PAGEOS was a balloon satellite which was launched by NASA in June 1966.
Karl-Rudolf Koch is a German geodesist and professor at the University of Bonn (FRG). In the global geodetic community, he is well known for his research work in geodetic statistics, particularly robust parameter estimation and in gravity field models.
Arne Bjerhammar was a Swedish geodesist. He was professor at Royal Institute of Technology (KTH) in Stockholm. He was born in Båstad, Scania in the south of Sweden.
The Bessel ellipsoid is an important reference ellipsoid of geodesy. It is currently used by several countries for their national geodetic surveys, but will be replaced in the next decades by modern ellipsoids of satellite geodesy.
Prof. em. Dr. Armin Gruen is, since 1984, professor and head of the Chair of photogrammetry at the Institute of Geodesy and Photogrammetry (IGP), Federal Institute of Technology (ETH) Zurich, Switzerland. Since 1 August 2009, he is retired and is now with the Chair of Information Architecture, ETH Zurich Faculty of Architecture. He is currently acting as a principal investigator on the Simulation Platform of the SEC-FCL in Singapore.
The Faculty of Geodesy and Land Management is one of the sixteen faculties of University of Warmia and Mazury in Olsztyn and prepares students to work in the following fields: digital photogrammetry and Internet photogrammetry, close range photogrammetry, engineering geodesy, satellite geodesy, higher geodesy, geomatics and spatial information systems, land management, numerical cartography, cadastral survey and common appraisal, mathematics and mathematical statistics, spatial and archeological reconstruction, positioning and navigation systems, remote sensing and photointerpretation, theory of deterministic chaos in dynamic analyses, theory of environment and real estate evaluation. Students of land management are prepared to work in local governments in the fields of real estate management and turnover, spatial planning, property counselling and expertise. Research on application of global satellite navigation systems, improving methods of acquiring, gathering and processing geodetic and satellite data and their use in special information systems as well as optimizing methods of space management are only a few examples of scientific fields of interest of the faculty employees.
The Army Map Service (AMS) was the military cartographic agency of the United States Department of Defense from 1941 to 1968, subordinated to the United States Army Corps of Engineers. On September 1, 1968, the AMS was redesignated the U.S. Army Topographic Command (USATC) and continued as an independent organization until January 1, 1972, when it was merged into the new Defense Mapping Agency (DMA) and redesignated as the DMA Topographic Center (DMATC). On October 1, 1996, DMA was folded into the National Imagery and Mapping Agency (NIMA), which was redesignated as the National Geospatial-Intelligence Agency (NGA) in 2003.
Sebastian Finsterwalder was a German mathematician and glaciologist. Acknowledged as the "father of glacier photogrammetry"; he pioneered the use of repeat photography as a temporal surveying instrument in measurement of the geology and structure of the Alps and their glacier flows. The measurement techniques he developed and the data he produced are still in use to discover evidence for climate change.
Least-squares adjustment is a model for the solution of an overdetermined system of equations based on the principle of least squares of observation residuals. It is used extensively in the disciplines of surveying, geodesy, and photogrammetry—the field of geomatics, collectively.
Hellmut is a given name. Notable people with the name include:
The Geodetic Observatory Wettzell is located atop the 616 meter-high mountain Wagnerberg, west of the village Wettzell in the German district Cham in the Bavarian Forest.
The Transcontinental Traverse (TCT) was a geodetic survey traverse conducted in the Continental United States by the U.S. Coast and Geodetic Survey between 1961 and 1976. It was the most accurate large-area survey ever done prior to Global Positioning System surveys. TCT included over 2,700 survey stations, covered over 13,600 miles, and passed through 44 states.
