论文标题
使用VGO观察UT1-UTC
Observing UT1-UTC with VGOS
论文作者
论文摘要
我们使用VLBI全局观察系统（VGO）提出了UT1-UTC确定的第一个结果。在2019年12月至2020年2月期间，使用日本Ishioka的VGOS站和瑞典的Onsala Twin Telescopes进行了一系列1〜小时的观察会议。该VGOS-B系列的数据是相关的，处理后处理并在Onsala空间天文台进行了分析的。将派生的UT1-UTC结果与标准遗产S/X密集型会话（INT1/INT2）的相应结果进行了比较，以及国际地球旋转和参考框架服务（IERS）的最终值（IERS Bulletin〜b。 VGOS-B系列的UT1-UTC结果比标准旧版S/X INT系列的正式不确定性低3-4倍。此外，与INT1/INT2的结果相比，VGOS-B结果的根平方（RMS）一致性相对于IERS公告〜b的一致性要好30-40％。
We present first results of UT1-UTC determinations using the VLBI Global Observing System (VGOS). During December 2019 through February 2020 a series of 1~hour long observing sessions were performed using the VGOS stations at Ishioka in Japan and the Onsala twin telescopes in Sweden. The data of this VGOS-B series were correlated, post-correlation processed, and analysed at the Onsala Space Observatory. The derived UT1-UTC results were compared to corresponding results from standard legacy S/X Intensive sessions (INT1/INT2), as well to the final values of the International Earth Rotation and Reference Frame Service (IERS), provided in IERS Bulletin~B. The VGOS-B series achieve 3-4 times lower formal uncertainties for the UT1-UTC results than standard legacy S/X INT series. Furthermore, the root mean square (RMS) agreement with respect to the IERS Bulletin~B is 30-40 % better for the VGOS-B results than for the INT1/INT2 results.
