英文摘要 |
Ballistic metric camera is the equipment used for satellite tracking in the 1970s serving large area, even global, geodetic network survey based on the principle of photogrammetry. A metric camera with superior stability of interior orientation was employed to scan the sky so the track of satellites can be recorded by photos. A network of observation stations scattered around globally was teamed for geodesy missions. This is the pioneering satellite positioning system in the 1970s. The Zeiss BMK A2/46/18 camera, located in the exhibition room in ground floor of Department of Geomatics, National Cheng Kung University (NCKU), Tainan, Taiwan, is a camera this kind of the satellite tracking system. A glass-based photographic plate was adopted for the stability. This note introduces the ballistic metric camera and how it functioned. The BMK owned by NCKU was purchased in 1972 and served as an important equipment for the research in the field of Satellite Geodesy of Prof. Lung Chang Chou, who passed away in October 1, 2022. This writing is dedicated to Prof. Chou with deep remembrance. |