Hellmut H. Schmid (12 September 1914 – 27 April 1998) was a Swiss professor of
geodesy
Geodesy or geodetics is the science of measuring and representing the Figure of the Earth, geometry, Gravity of Earth, gravity, and Earth's rotation, spatial orientation of the Earth in Relative change, temporally varying Three-dimensional spac ...
and
photogrammetry
Photogrammetry is the science and technology of obtaining reliable information about physical objects and the environment through the process of recording, measuring and interpreting photographic images and patterns of electromagnetic radiant ima ...
. He taught at
ETH Zürich
ETH Zurich (; ) is a public university in Zurich, Switzerland. Founded in 1854 with the stated mission to educate engineers and scientists, the university focuses primarily on science, technology, engineering, and mathematics. ETH Zurich ra ...
(Switzerland). In the 1950s, he worked on
space exploration
Space exploration is the process of utilizing astronomy and space technology to investigate outer space. While the exploration of space is currently carried out mainly by astronomers with telescopes, its physical exploration is conducted bo ...
in the United States. Between 1968 and 1974, he promoted the first
intercontinental network of
satellite geodesy.
Research
* Geodetic measurement methods at the
V2 project in
Peenemünde
Peenemünde (, ) is a municipality on the Baltic Sea island of Usedom in the Vorpommern-Greifswald district in Mecklenburg-Vorpommern in north-eastern Germany. It is part of the ''Amt (country subdivision), Amt'' (collective municipality) of Used ...
(~1942)
* Beginnings of
satellite geodesy 1959
* Theory of
analytical photogrammetry and
matrix
Matrix (: matrices or matrixes) or MATRIX may refer to:
Science and mathematics
* Matrix (mathematics), a rectangular array of numbers, symbols or expressions
* Matrix (logic), part of a formula in prenex normal form
* Matrix (biology), the m ...
/
IT developments (1950s, USA)
* High precision evaluation of
photogram
A photogram is a Photography, photographic image made without a camera by placing objects directly onto the surface of a light-sensitive material such as photographic paper and then exposing it to light.
The usual result is a negative shadow im ...
(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 transformations
In geometry, a coordinate system is a system that uses one or more numbers, or coordinates, to uniquely determine and standardize the position of the points or other geometric elements on a manifold such as Euclidean space. The coordinates are ...
(~1975)
* Development of
3D intersection
In mathematics, the intersection of two or more objects is another object consisting of everything that is contained in all of the objects simultaneously. For example, in Euclidean geometry, when two lines in a plane are not parallel, their ...
methods in analytical photogrammetry
See also
*
PAGEOS,
balloon satellite
A balloon satellite, sometimes referred to as a "satelloon", is a satellite inflated with gas after it has been put into orbit.
Echo 1 and Echo 2 balloon satellites
The first flying body of this type was Echo 1, which was launched into a hi ...
s,
stellar triangulation
* Global
reference ellipsoid
An Earth ellipsoid or Earth spheroid is a mathematical figure approximating the Earth's form, used as a reference frame for computations in geodesy, astronomy, and the geosciences. Various different ellipsoids have been used as approximation ...
, "Earth
polyhedron
In geometry, a polyhedron (: polyhedra or polyhedrons; ) is a three-dimensional figure with flat polygonal Face (geometry), faces, straight Edge (geometry), edges and sharp corners or Vertex (geometry), vertices. The term "polyhedron" may refer ...
",
geodetic system
A geodetic datum or geodetic system (also: geodetic reference datum, geodetic reference system, or geodetic reference frame, or terrestrial reference frame) is a global datum reference or reference frame for unambiguously representing the posi ...
,
WGS84
*
ETH Zürich
ETH Zurich (; ) is a public university in Zurich, Switzerland. Founded in 1854 with the stated mission to educate engineers and scientists, the university focuses primarily on science, technology, engineering, and mathematics. ETH Zurich ra ...
,
Ohio State University
The Ohio State University (Ohio State or OSU) is a public university, public Land-grant university, land-grant research university in Columbus, Ohio, United States. A member of the University System of Ohio, it was founded in 1870. It is one ...
,
Friedrich Hopfner
Literature
*
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
Satellitentriangulation". ''Wiss. Mitteilungen''
ETH Zürich
ETH Zurich (; ) is a public university in Zurich, Switzerland. Founded in 1854 with the stated mission to educate engineers and scientists, the university focuses primarily on science, technology, engineering, and mathematics. ETH Zurich ra ...
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
*
ZfV 1998: Hellmut H. Schmid † (obituary).
Professor Dr. h.c. HellmutH. Schmid (1914- 1998)* "Dr. Schmid leaves Aberdeen after 12 year to join staff at GIMRADA":
{{DEFAULTSORT:Schmid, Hellmut
Geodesists
1914 births
1998 deaths
Academic staff of ETH Zurich
Photogrammetrists
Swiss expatriates in the United States