Measuring method for unit panel of reflecting surface of spherical radio telescope

Abstract

The invention relates to a measuring method for a unit panel of a reflecting surface of a spherical radio telescope. The measuring method can effectively solve the problem of rapidly and accurately measuring the unit panel of the spherical radio telescope. The measuring method comprises the following steps of: laying circular directional reflective signs on 66 adjusting nodes of each panel, placing a code sign framework on a signal panel, and laying code signs on the code sign frameworks, and calculating the sizes of artificial signs; pushing unit antenna panels into the code sign frameworks, and moving a camera for measurement; calculating through a photographic surveying system, and finishing the splicing of images and the transfer of coordinate relationships between measuring points; and carrying out optimal calculation by using a measured data analysis system, a CAD (Computer-Aided Design) model and measuring data to obtain the profile accuracy of the panel, and leading out a three-dimensional displayed deviation value needle-like pattern and a deviation value data statement, thereby finishing the measurement of the unit panel of the spherical radio telescope. The measuring method has the advantages of simpleness, easiness in operation, small labor intensity, fast speed, time and labor saving and high accuracy.

Description

technical field [0001] The invention relates to a measurement method for a reflector unit panel of a spherical radio telescope (FAST). Background technique [0002] The pre-study of the Spherical Radio Telescope (FAST) began in 1994, hosted by the National Astronomical Observatory of the Chinese Academy of Sciences, with the participation of more than 100 scientific and technological backbones from more than 20 universities and research institutes across the country, and extensive cooperation with Britain, the Netherlands, Germany, Australia, the United States, etc. . In July 2007, the National Development and Reform Commission agreed in principle to include the 500-meter Aperture Spherical Radio Telescope (FAST) project in the national high-tech industry development project plan, and the FAST project of the National Astronomical Observatory of the Chinese Academy of Sciences officially completed the national project approval. The construction site of the project is Qiannan...

AI Technical Summary

Problems solved by technology

Due to the panel inspection on the installation site of the FAST project, the current manual conventional method has a large workload (4400 unit panels), takes a long time, and cannot guarantee the accuracy of the measurement, which affects the use effect and cannot meet the basic requirements of fast and accurate on-site measurement.

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