Combination of the Weekly Solutions Delivered by the SIRGAS Processing Centres for the SIRGAS-CON Reference Frame
Combination of the Weekly Solutions Delivered by the SIRGAS Processing Centres for the SIRGAS-CON Reference Frame
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SIRGAS 处理中心为 SIRGAS-CON 参考框架提供的每周解决方案组合
DOI：
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
M. Seitz
中科院分区：
文献类型：
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作者：
L. Sánchez;W. Seemüller;M. Seitz
SIRGAS参考框架由200多个连续运行的台站（SIRGAS-CON网络）提供，这些台站分为四个子网：一个大陆子网（SIRGAS-CON-C），约有100个台站均匀分布在拉丁美洲和加勒比地区;三个密集子网（SIRGAS-CON-D），覆盖SIRGAS区域的北方、中部和南部。每个子网由一个SIRGAS处理中心处理：DGFI（德国）负责SIRGAS-CON-C网络，IGAC（哥伦比亚）负责北方致密化子网，IBGE（巴西）负责中间子网，CIMA（阿根廷）负责南方子网。这些处理中心提供不受严格限制的每周解决方案，这些解决方案由在DGFI和IBGE运营的SIRGAS组合中心集成为统一的解决方案。DGFI（即IGS RNAAC SIR）每周组合交付给IGS全球多面体数据中心，并作为SIRGAS官方每周参考框架解决方案提供给用户。巴西地理统计局的每周组合提供控制和冗余。本文介绍了DGFI应用的组合策略，强调对单个解决方案的评估和最终每周组合的质量控制。通过将所得坐标与巴西地理统计局和IGS全球网络每周组合产生的坐标进行比较，对所得坐标的可靠性进行了估计。
The SIRGAS reference frame is given by more than 200 continuously operating stations (SIRGAS-CON network), which are classified in four sub-networks: a continental one (SIRGAS-CON-C) with about 100 stations homogeneously distributed over Latin America and the Caribbean, and three densification sub-networks (SIRGAS-CON-D) covering the northern part, the middle part, and the southern part of the SIRGAS region. Each sub-network is processed by one of the SIRGAS Processing Centres: DGFI (Germany) is responsible for the SIRGAS-CON-C network, IGAC (Colombia) for the northern densification sub-network, IBGE (Brazil) for the middle one, and CIMA (Argentina) for the southern one. These Processing Centres deliver loosely constrained weekly solutions, which are integrated in a unified solution by the SIRGAS Combination Centres operating at DGFI and IBGE. The DGFI (i.e. IGS RNAAC SIR) weekly combinations are delivered to the IGS Data Centres for the global polyhedron, and are made available for users as official SIRGAS weekly reference frame solution. The IBGE weekly combinations provide control and redundancy. This paper describes the combination strategy applied by DGFI, emphasizing the evaluation of the individual solutions and the quality control of the final weekly combinations. The reliability of the resulting coordinates is estimated by comparing them with those produced by IBGE and the weekly combinations of the IGS global network.