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Proceedings Paper

Computer modeling of the optic-electronic system for deformation measurement of radio-telescope counter-reflector
Author(s): Ilya Kaliteevskiy; Igor Konyakhin
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Paper Abstract

The metrological support of many measurement tasks requires measuring spatial position of some objects in respect to rigid base. The microwave radio-telescope development requires high-precision control of the position of the counterreflector. The construction elements weight and thermal deformation leads to changes of position and linear shift of each planar section in respect to ideal parabolic shape. In this case it is necessary to implement control system for measuring these deformations of the reflector. For determination of the actual shape of the reflector control objects (light-emitting diodes, LED) placed on the reflector, and their coordinates in respect to motionless construction element (base ring placed on the top main mirror) are measured by triangulation method using CCD camera, which determines vision angles of LEDs. Analysis of relations of primary errors of measurements and errors of determinations of actual coordinates of the reflectors confirm feasibility of the whole system of control of the shape of counter-reflector.

Paper Details

Date Published: 12 January 2009
PDF: 6 pages
Proc. SPIE 7133, Fifth International Symposium on Instrumentation Science and Technology, 71333X (12 January 2009); doi: 10.1117/12.807666
Show Author Affiliations
Ilya Kaliteevskiy, St. Petersburg State Univ. of Information Technologies, Mechanics and Optics (Russian Federation)
Igor Konyakhin, St. Petersburg State Univ. of Information Technologies, Mechanics and Optics (Russian Federation)


Published in SPIE Proceedings Vol. 7133:
Fifth International Symposium on Instrumentation Science and Technology

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