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A new efficient laser angle metrology system for maintaining the large radio telescope active reflecting antenna
Yong Zhang; Dehua Yang; Yeping Li; Guohua Zhou; Aihua Li; Guoping Li; Zhenchao Zhang
2010-08-04
Source PublicationGround-based and Airborne Telescopes III
Volume7733
Issue7733
PagesVol.7733 3M-1-8
Conference Date2008-6-27
Conference PlaceSan Diego, California, USA
Funding OrganizationThe International Society for Optical Engineering
PublisherSPIE
Abstract
Radio telescopes with much more larger aperture collect much more signals and therefore sought after by astronomers. The primary reflecting antenna is traditionally segmented and perfectly optically aligned at the central altitude among the whole observation sky area for minimizing the gravitational deformation during operation and passively open-loop maintained at any other altitude. A new laser segmentation sensing and maintaining method based on normal deflection angle measurement is proposed in this paper. After the introduction of the theory, the method is simulated and tested on a special prototype of radio panel segmentation system. It provides real-time monitoring and measurement of the global segmentation status of all panels and is proved to be a high accurate, high efficient and low cost method. Finally several conclusions are reached.
KeywordRadio Telescope Laser Scanning Antenna Sensing Panel Segmentation Active Antenna Maintaining
Subject Area射电望远镜 ; 天文技术与方法
Document Type会议论文
Identifierhttp://ir.niaot.ac.cn/handle/114a32/579
Collection中国科学院南京天文光学技术研究所_会议论文
望远镜新技术研究室_会议论文
Recommended Citation
GB/T 7714
Yong Zhang,Dehua Yang,Yeping Li,et al. A new efficient laser angle metrology system for maintaining the large radio telescope active reflecting antenna[C]:SPIE,2010:Vol.7733 3M-1-8.
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