摘要
本文评述VLBI综合成图法的发展。我们首先回顾VLBI技术的历史并给出VLBI综合成图中常用的技术参数。接着列举了一些存在的问题,包括(u,v)覆盖,可见度数据改正,图像质量的讨论,综合条纹拟合法(global fringe fitting)、视场等。有关新发展,我们提及(u,v)覆盖,角分辨率提高,MkⅢ综合条纹拟合,相位基准法(phase referencing),宽视场成图法,差分成图法(difference mapping),空间VLBI成图研究,图像拼接法,以及非线性解卷积法等。
We review developments of VLBI synthesis mapping. Before our discussion, we give a brief history of VLBI techniques and a summary of some technical parameters frequently used in VLBI synthesis mapping. We, then, mention problems, namely, (u,v) coverage, correction of errors in visibility data, image quality, GFF (Global Fringe Fitting), field of view, and so on. The new developments which are presented in this paper include the improvements of (u,v) coverage and angular resolution, MkⅢ GFF, phase reference mapping, wide field mapping, difference mapping, the potential of space VLBI mapping, mosaicing and non-linear deconvolution.
出处
《天文学进展》
CSCD
北大核心
1992年第4期264-274,共11页
Progress In Astronomy
