首页 | 本学科首页   官方微博 | 高级检索  
     检索      


Optimum linear array of an optical aperture synthesis telescope
Authors:Jianguo Wen  Shengzhen Jin  Shunian Ning
Institution:(1) National Astronomical Observatory, Chinese Academy of Sciences, 100012 Beijing, China;(2) China University of Mining and Technology, 100083 Beijing, China
Abstract:Measuring out successively the degree of coherence of the source produced by any couple of the small apertures via rotating an array composed of the small aperture telescopes, and synthesizing them into the (u, v) coverage of the source, the brightness distribution of the source can be obtained by the inverse Fourier transform of the degree of coherence with much higher resolution than from a single telescope. This article discusses the arrangements of the small apertures in the linear array, and found a method to decide the quality of the arrangements. the judgment factor ε is introduced to calculate the arrangements in quantity. There are 1.5×1011 possibilities for 11 apertures. Therefore, the computer procedures are programmed to select the optimum arrangements. The effect of the simulation of the aperture synthesis is given for the linear array. The simulation method can also be used in the nonlinear arrays.
Keywords:optical aperture synthesis  optimum linear array  judgment factor  (u  v)-spectrum sampling  point spread function
本文献已被 万方数据 SpringerLink 等数据库收录!
点击此处可从《中国科学通报(英文版)》浏览原始摘要信息
点击此处可从《中国科学通报(英文版)》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号