Improved Geodetic Modelling through Very Long Baseline Interferometry

通过超长基线干涉测量改进了大地测量模型。我们计划开发大地VLBI能力，为GPS和SLR等替代技术的结果提供独立确认，并使我们能够表征和消除这些系统中固有的系统误差，以VLBI测量和GPS/SLR数据为基础，生产一个最佳、统一的地面参考系统，特别是在南极地区。ITRF以VLBI ICRF为基础，将我们的天文测量和地球动力学研究项目联系起来。\r\n我们将结合VLBI、GPS、重力和验潮仪数据来估计地球动力学效应的运动，如冰川后反弹和构造运动、全球平均海平面变化和确定日长(LOD)变化，主要侧重于了解南大洋的贡献。\r\n

Improved Geodetic Modelling through Very Long Baseline Interferometry. We plan to develop a geodetic VLBI capability to provide independent confirmation of results from alternative techniques such as GPS and SLR and allow us to characterise and remove the systematic errors inherent in these systems, to produce an optimum, unified terrestrial reference system based on VLBI measurements, together with GPS/SLR data, especially for the Antarctic region. The ITRF is based on the VLBI ICRF linking our astrometric and geodynamic research programs.\r\nWe will estimate motion at sites from the combination of VLBI, GPS, gravity and tide gauge data for geodynamic effects, such as post-glacial rebound and tectonic motion, global mean sea level change and determine length-of-day (LOD) variations, focused primarily on understanding the contribution from the Southern Oceans.\r\n