Establishing the reference frame using astronomical and space-geodetic observations

澳大利亚越来越依赖于空间定位和空间数据，但主要依靠国际机构和研究组织提供地球上使用的坐标和参考系定义的定期更新。提高参考系定义的准确性和我们对天基测量误差的理解将为地球研究提供新的见解。这项研究将产生具有国家意义的研究成果，如海平面上升、极地融化的影响和地壳变形，以及发展澳大利亚在利用从太空观测地球方面的专业知识。

Australia is increasingly dependent on spatial positioning and spatial data, yet mostly relies upon international agencies and research organisations to provide regular updates of coordinates and reference frame definition used on Earth. Improving the accuracy of the reference frame definition and our understanding of errors in the space-based measurements will provide new insights for studies of the Earth. The research will yield results in studies of national significance, such as sea level rise, the effects of melting polar regions, and crustal deformation, as well as developing Australia's expertise in exploiting observations of the Earth from space.