International VLBI Service for Geodesy and Astrometry: Earth orientation parameter combination methodology and quality of the combined products
International VLBI Service for Geodesy and Astrometry: Earth orientation parameter combination methodology and quality of the combined products
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国际大地测量和天体测量 VLBI 服务:地球定向参数组合方法和组合产品的质量
DOI:
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发表时间:
2010
期刊:
影响因子:
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通讯作者:
V. Tesmer
中科院分区:
文献类型:
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作者:
S. Böckmann;T. Artz;A. Nothnagel;V. Tesmer
The analysis coordinator of the International VLBI Service for Geodesy and Astrometry (IVS) regularly disseminates the official IVS products of Earth orientation parameters (EOPs). For 2 years now, these parameters have been produced by combining datum‐free normal equations of up to six IVS analysis centers. In this paper we document the combination methodology, discuss critical issues, and report on the quality of the products. The agreement of the very long baseline interferometry results with the International Global Navigation Satellite Systems (GNSS) Service GPS EOPs is of the order of 18 μs for length of day and 100 μas (microarc seconds) and 300 μas/d for the polar motion components and their rates, respectively.