陆态网络与IGS数据对地球自转参数的解算精度分析
Analysis on the Solution of Earth Rotation Parameters with GNSS Data of CMONOC and IGS
DOI: 10.12677/GST.2019.71007, PDF, 下载: 853  浏览: 2,053  科研立项经费支持
作者: 李雪川, 郭炳辉, 李经纬：中国地震局第一监测中心，天津；刘学习：武汉大学测绘学院，湖北 武汉
关键词: 陆态网络；国际GNSS服务；地球自转参数；GNSS星历；CMONOC； IGS； ERP； GNSS Satellite Ephemerides
摘要: 为分析陆态网络GPS数据进行ERP解算的精度，本文首先选取了40个均匀分布的陆态网络GNSS基准站和相同数目的IGS测站，利用其2018年1月28日至3月3日共35天的观测数据分别解算了地球自转参数(ERP)，解算结果与IERS公布的ERP精密结果对比表明，利用区域性的陆态网络测站数据解算ERP的精度要低于IERS Bulletin A预报产品的精度，而利用IGS全球分布的测站数据则可以得到精度明显优于Bulletin A的ERP产品；同时为分析卫星星历对ERP解算精度的影响以及实时应用的考虑，本文还基于GPS快速星历解算了ERP，结果表明除IGS数据解算的XP结果精度优于Bulletin A以外，其他参数的解算结果精度均明显低于Bulletin A产品精度。
Abstract: In order to analyze the accuracy of the ERP calculated by the GPS observations of the Crustal Movement Observation Network of China (CMONOC), firstly, 40 GNSS continuously stations from CMONOC and the same number of International GNSS Service (IGS) Stations were selected based on the network geometry. With the observation data of 35 days from January 28th to March 3rd, 2018, the earth rotation parameters (ERP) were calculated respectively. Compared the results with the ERP precision results published by IERS, it was shown that the precision of ERP calculated by the CMONOC data was lower than that of the IERS Bulletin A products, while using the data from the IGS stations, the ERP products with better accuracy than Bulletin A could be obtained. Secondly, in view of the real-time application, this paper also solved the ERP based on the GNSS rapid ephemerides. Results showed that the accuracy of the XP results based on the IGS data was better than that of the Bulletin A, while the accuracy of other parameters was significantly lower than that of the Bulletin A product.
文章引用：李雪川, 郭炳辉, 李经纬, 刘学习. 陆态网络与IGS数据对地球自转参数的解算精度分析[J]. 测绘科学技术, 2019, 7(1): 36-43. https://doi.org/10.12677/GST.2019.71007

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