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arxiv: 0905.1252 · v2 · submitted 2009-05-08 · 🌌 astro-ph.IM

Photogrammetric Measurements of a 12-metre Preloaded Parabolic Dish Antenna

N. Udaya Shankar (1) , R. Duraichelvan (1) , C.M. Ateequlla (1) , Arvind Nayak (1) , A. Krishnan (1) , M.K.S. Yogi (1) , C. Koteshwar Rao (2) , K. Vidyasagar (2)
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Rohit Jain (2) Pravesh Mathur (2) K.V. Govinda (2) R.B. Rajeev (2) T.L. Danabalan (2) ((1) Raman Research Institute Bangalore India (2) Indian Space Research Organisation Satellite Centre India)
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keywords antennaparabolicbackupbuiltdishmeasurementsmetrephotogrammetric
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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.

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