Hellmut Schmid

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 intercontinental network of satellite geodesy.

Research Geodetic measurement methods at the V2 project in Peenemünde (~1942) Beginnings of satellite geodesy 1959 Theory of analytical photogrammetry and matrix/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 transformations (~1975) Development of 3D intersection methods in analytical photogrammetry