A Study of the Fitting Accuracy of the Active Reflector for a Large Spherical Radio Telescope

Details A Study of the Fitting Accuracy of the Active Reflector for a Large Spherical Radio Telescope A Study of the Fitting Accuracy of the Active Reflector for a Large Spherical Radio Telescope

Oct 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003chjaa...3..478t&link_type=abstract

Chinese Journal of Astronomy & Astrophysics, Vol. 3, No. 5, p. 478-490

Astronomy and Astrophysics

Astrophysics

Telescopes: Radio Telescope, Active Reflector

Scientific paper

We propose a spatial three-degree-of-freedom (DOF) parallel mechanism combining two degrees of rotations and one degree of translation to support the active reflector units of a large spherical radio telescope. The kinematics, workspace and accuracy of the mechanism are analyzed. One-dimensional and two-dimensional fitting errors to the working region of active reflector are investigated. Dimensional parameters of the mechanism and active reflector unit are examined with respect to the requirement of fitting accuracy. The result of accuracy analysis shows the effectiveness and feasibility of the proposed mechanism, and gives a design rule to guarantee the highest working frequency required by large radio telescope.

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