Global Positioning System (GPS) position verification and legal traceability in Australia supports industry, trade, science and innovation and is trusted and recognized domestically and internationally. At the end of 2017, the Australia’s national datum was transitioned from the Geocentric Datum of Australia 1994 (GDA94) to the Geocentric Datum of Australia 2020 (GDA2020). As such, the datum for the legal traceability of GPS positions in Australia has also moved to GDA2020. This paper highlights the importance of legal metrology and measurement in terms of GPS positions in accordance with the National Measurement Act 1960 (Commonwealth of Australia). Here we provide an overview of the process of issuing the so-called ‘Regulation 13 Certificates’ for Continuously Operating Reference Stations (CORS) across Australia. The position verification methodology is detailed, including the quality control, metadata assurance, and dynamic management of the certificates as well as positional uncertainty determination of CORS with varying quality. A quality monitoring system of positions is also discussed along with how measurement traceability is ensured including short-term and long-term position monitoring schemes.

中文翻译：

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澳大利亚GPS定位的法律可追溯性概述

澳大利亚的全球定位系统（GPS）位置验证和法律可追溯性为工业，贸易，科学和创新提供支持，并在国内外受到信任和认可。2017年底，澳大利亚的国家基准从1994年的澳大利亚地心基准（GDA94）过渡到2020年的澳大利亚地心基准（GDA2020）。因此，澳大利亚GPS位置的法律可追溯性基准也已移至GDA2020。本文强调了根据1960年《国家测量法》（澳大利亚联邦）在GPS位置方面进行法律计量和测量的重要性。在此，我们概述了在澳大利亚全国范围内连续运行的参考站（CORS）发行所谓的“第13条证书”的过程。详细说明了职位验证方法，包括证书的质量控制，元数据保证和动态管理，以及质量不同的CORS的位置不确定性确定。还讨论了职位质量监控系统，以及如何确保测量可追溯性，包括短期和长期职位监控方案。