Optimum linear array of an optical aperture synthesis telescope

作     者：WEN Jianguo JIN Shengzhen NING Shunian 

作者机构：National Astronomical ObservatoryChinese Academy of SciencesBeijing 100012China China University of Mining and TechnologyBeijing 100083China 

出 版 物：《Chinese Science Bulletin》 (CHINESE SCIENCE BULLETIN)

年 卷 期：2002年第47卷第23期

页      面：1964-1968页

核心收录：

学科分类：07[理学] 070401[理学-天体物理] 0704[理学-天文学] 

基　　金：This work Was supported by the"863"Projects in China 

主　　题：optical aperture synthesis optimum linear array judgment factor (u v)-spectrum sampling point spread function. 

摘      要：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 factorε is introduced to calculate the arrangements in quantity. There are 1.5x1011 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.