The possibility of observing satellites with the very long baseline interferometry (VLBI) technique has been discussed for several years in the geodetic community, with observations of either existing satellites of the global navigation satellite systems or of satellites dedicated to realise a space tie. Such observations were carried out using the Australian telescopes in Hobart and Ceduna which, for the first time, integrated all the necessary steps: planning the observations (automated scheduling), correlation of the data and the generation of a series of time delay observables suitable for a subsequent geodetic analysis. We report on the development of new and the adaptation of existing routines for observing and data processing, focusing on technology development. The aim was to use methods that are routinely used in geodetic VLBI. A series of test experiments of up to six hours duration was performed, allowing to improve the observations from session to session and revealing new problems still to be solved. The newly developed procedures and programs now enable more observations. Further development assumed, this bears the prospect of being directly applied to the observation of dedicated space-tie satellites.

中文翻译：

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GNSS 卫星的 VLBI 观测：从调度到分析

多年来，大地测量界一直在讨论使用超长基线干涉测量 (VLBI) 技术观测卫星的可能性，观测全球导航卫星系统的现有卫星或致力于实现空间联系的卫星。此类观测是使用位于霍巴特和塞杜纳的澳大利亚望远镜进行的，该望远镜首次整合了所有必要步骤：计划观测（自动调度）、数据关联以及生成一系列适用于随后的大地测量分析。我们报告了新的观测和数据处理程序的开发和现有程序的改编，重点是技术发展。目的是使用大地测量 VLBI 中常规使用的方法。进行了长达 6 小时的一系列测试实验，以改进每个会话的观察结果并揭示仍有待解决的新问题。新开发的程序和程序现在可以进行更多的观察。假设进一步发展，这有可能直接应用于专用空间连接卫星的观测。