VLBI中性大气折射延迟的研究进展——天顶延迟的改正模型  

Research progress on the neutral atmospheric refraction delays for VLBI-correction model of the mapping function

作　　者：张捍卫[1] 郑勇[2] 马高峰[2] 

机构地区：[1]中国科学院测量与地球物理研究所,武汉430077 [2]郑州信息工程大学测绘学院大地系,郑州450052

出　　处：《测绘科学》2003年第2期53-57,共5页Science of Surveying and Mapping

基　　金：国家自然科学基金(40174002);国家杰出青年科学基金(40125013)

摘　　要：大气传播延迟是空间大地测量技术的主要误差源,特别是在低高度角的观测情况下尤其如此。因此,大气折射改正的研究仍然是当代新空间技术研究的重要课题之一,完善大气折射理论不仅可以改善新技术的归算精度,而且有希望降低仪器的观测截止角,提高仪器的使用效应。详细地综述了对流层大气折射延迟研究的基本概念和理论方法,探讨了对不同精度要求和不同高度截至角的VLBI观测可以采用的大气折射延迟模型的计算方法。One of the main error sources is atmospheric transmitting delay in the Space Geodesy technology,especially in the low elevation. Therefore, the research of atmospheric refraction is still one of important problems in the space technology. The improving of the theory of atmospheric refraction can not only amend the precision of new technology, but also can debase instrumental cut off elevation and make the best of instruments. In this paper, the basic conceptions and theories are summed up in the research of troposphere atmospheric refraction delay. The calculative methods used by the models of atmospheric refraction delays in the VLBI observations with diversified precision demands and cut off elevations has been discussed.

关 键 词：对流层 平流层 大气折射延迟 天顶延迟 

分 类 号：P228[天文地球—大地测量学与测量工程]