An active reflector antenna using a laser angle metrology system

作     者：Yong Zhang Jie Zhang De-Hua Yang Guo-Hua Zhou Ai-Hua Li Guo-Ping Li 

作者机构：National Astronomical Observatories/Nanjing Institute of Astronomical Optics ＆ TechnologyChinese Academy of Sciences Nanjing 210042 China Key Laboratory of Astronomical Optics ＆ Technology Nanjing Institute of Astronomical Optics＆ Technology Chinese Academy of Sciences Nanjing 210042 China Graduate University of Chinese Academy of Sciences Beijing 100049 China 

出 版 物：《Research in Astronomy and Astrophysics》 (天文和天体物理学研究（英文版）)

年 卷 期：2012年第12卷第6期

页      面：713-722页

核心收录：

学科分类：080904[工学-电磁场与微波技术] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 0803[工学-光学工程] 

基　　金：supported by the National Natural Science Foundation of China(Grant Nos. 10703008,11073035 and 10833004) the Knowledge Innovation Program of the Chinese Academy of Sciences (Grant No. KJCX2-YW-T17) 

主　　题：radio radiation    telescopes    adaptive optics    sub millimeter 

摘      要：An active reflector is one of the key technologies for constructing large telescopes, especially for millimeter/sub-millimeter radio telescopes. This article in- troduces a new efficient laser angle metrology system for an active reflector antenna on large radio telescopes. Our experiments concentrate on developing an active reflec- tor for improving the detection precisions and the maintenance of the surface shape in real time on the 65-meter prototype radio telescope constructed by Nanjing Institute of Astronomical Optics and Technology （NIAOT; http：//***/）. The test results indicate that the accuracy of the surface shape segmentation and maintenance has the dimensions of microns, and the time-response can be on the order of minutes. Our efforts proved to be workable for sub-millimeter radio telescopes.