摘要
用总体条纹拟合求解各天线的延迟量和条纹率参数,可以提高与小天线相关基线的灵敏度。本文以射电致密陡谱源(CSS)3C43为例,就如何提高数据的信噪比,尽可能多地保留有效数据方面做了成功的尝试.从而十分有效地使用了总体条纹拟合方法.我们认为:对源结构的预知,配以恰当的处理技巧,能获取更多射电源结构信息,改善成图质量.
Global fringe search technique is used to y eld a simultaneous solution for all delay and fringe rate parameters. This approach may raie the sensitivity related to the baselines of small antennae. Taking 3C43, a compact steep spectrum source as example we have made several experiments to find out how to raise the signal-noise rate and how to retain observational data as many as possible. We think that more radio structure information may be achieved with -the knowledge of source structure and suitable processing techniques.
基金
国家自然科学基金
