Optimum linear array of an optical aperture synthesis telescope

被引:1
|
作者
Wen, JG [1 ]
Jin, SZ
Ning, SN
机构
[1] Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
[2] China Univ Min & Technol, Beijing 100083, Peoples R China
来源
CHINESE SCIENCE BULLETIN | 2002年 / 47卷 / 23期
关键词
optical aperture synthesis; optimum linear array; judgment factor; (u; v)-spectrum sampling; point spread function;
D O I
10.1360/02tb9426
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
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 factor epsilon is introduced to calculate the arrangements in quantity. There are 1.5x10(11) 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.
引用
收藏
页码:1964 / 1968
页数:5
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