{{distinguish|Helmut Schmidt}} {{No footnotes|date=February 2021}} '''Hellmut H. Schmid''' (12 September 1914 – 27 April 1998) was a Swiss professor of [[geodesy]] and [[photogrammetry]]. He taught at [[ETH Zürich]] (Switzerland). In the 1950s, he worked on [[space exploration]] in the United States. Between 1968 and 1974, he promoted the first [[Continent|intercontinental]] network of [[satellite geodesy]].
==Research == * Geodetic measurement methods at the [[V-2 rocket|V2]] project in [[Peenemünde]] (~1942) * Beginnings of [[satellite geodesy]] 1959 * Theory of [[analytical photogrammetry]] and [[Matrix (mathematics)|matrix]]/[[Information technology|IT]] developments (1950s, USA) * High precision evaluation of [[photogram]] (ca. 1965-1978) * [[Worldwide Satellite Triangulation Network]] (1969-1973 (publ. 1974): first regular intercontinental network, 46 stations (3000–5000 km apart), pioneering accuracy (±3m) * Contributions to the [[least-squares adjustment]], network optimization, [[Block triangulation]] * Optimization of [[Coordinate system#Transformations|coordinate transformations]] (~1975) * Development of [[Three-dimensional space|3D]] [[Line-plane intersection|intersection]] methods in analytical photogrammetry
==See also== * [[PAGEOS]], [[balloon satellite]]s, [[stellar triangulation]] * Global [[reference ellipsoid]], "Earth [[polyhedron]]", [[geodetic system]], [[WGS84]] * [[ETH Zürich]], [[Ohio State University]], [[Friedrich Hopfner]]
==Literature== * [[Karl Ledersteger|K.Ledersteger]]: "'Astronomische und Physikalische Geodäsie ([[Erdmessung]])", ''JEK'' '''Vol.V''' (870 S., espec. §§ 2, 5, 13), J.B.Metzler, Stuttgart 1968 * H.H. Schmid: "Das Weltnetz der [[Satellite triangulation|Satellitentriangulation]]". ''Wiss. Mitteilungen'' [[ETH Zürich]] and ''Journal of Geophysical Research'', 1974. * Klaus Schnädelbach et al.: ''Western European Satellite Triangulation Programme (WEST), 2nd Experimental Computation''. Mitteilungen Geodät.Inst. Graz 11/1, Graz 1972 * Nothnagel, Schlüter, Seeger: ''Die Geschichte der geodätischen [[VLBI]] in Deutschland'', Bonn 2000 * [[:de:Zeitschrift für Vermessungswesen|ZfV]] 1998: Hellmut H. Schmid † (obituary). * [https://www.isprs.org/proceedings/Xxxiii/congress/partA/81_XXXIII-PartA.pdf Professor Dr. h.c. HellmutH. Schmid (1914- 1998)] * "Dr. Schmid leaves Aberdeen after 12 year to join staff at GIMRADA": {{cite book | author=United States. Department of the Army | title=Army Research and Development | publisher=Department of Defense, Department of the Army, Army Materiel Development and Readiness Command, Development and Engineering Directorate. | issue=v. 1-3 | year=1960 | url=https://books.google.com/books?id=6JjCF2Z7-gIC&pg=RA18-PA25 | access-date=2021-02-05}}
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{{DEFAULTSORT:Schmid, Hellmut}} [[Category:Geodesists]] [[Category:1914 births]] [[Category:1998 deaths]] [[Category:Academic staff of ETH Zurich]] [[Category:Photogrammetrists]] [[Category:Swiss expatriates in the United States]]