Research on building a model of multi-sensor optoelectronic system to control the surface of large objects

Abstract

This study proposed and studied a completely new optoelectronic system (OES) with multi-sensor matrix structure (CMOS) for measuring the main reflector surface deformation (MR) of a big-sized radio telescope. This system includes 24 multi-sensor cameras, in each 25 sensors are arranged, and each sensor is responsible for image acquisition of a control point on the MR surface. The simulation and calculation studies show that angular and linear errors when determining the initial position of multi-sensor cameras do not exceed 0.05 arcsecond and 0.005 mm, which will ensure an accuracy of 0.1 mm when locating control points on the main reflector surface. At the same time, the simulation also shows that the proposed EOS can control the entire reflector with the surface error not exceeding the limit value of 0.05 mm.