Astronomy and Astrophysics – Astrophysics – Instrumentation and Methods for Astrophysics
Scientific paper
2009-05-08
Astronomy and Astrophysics
Astrophysics
Instrumentation and Methods for Astrophysics
7 pages, 6 figures, 3 tables, Proceedings of the National Workshop on the Design of Antenna and Radar Systems (DARS), February
Scientific paper
A 12-metre Preloaded Parabolic Dish antenna, in which the backup structure is formed by preloading its radial and circumferential members, has been designed, built and commissioned by the Raman Research Institute, Bangalore. This paper reports the first-ever photogrammetric measurements of gravity-induced deformation in the primary reflector of an antenna built using this novel concept of preloading the backup structure. Our experience will be of relevance to radio astronomy and deep space network applications that require building lightweight and economical steerable parabolic antennas.
Ateequlla C. M.
Danabalan T. L.
Duraichelvan R.
Govinda K. V.
Jain Rohit
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