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The BIPM Time Department: Report on Activity

机译：BIPM时间表：活动报告

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The Time Department of the BIPM is responsible for the computation and dissemination of the Coordinated Universal Time through the monthly Circular T. To this aim, many activities are necessary, from the sound set up of a system for data collection, archiving, and processing, to the development of new algorithms and test on data treatments, to the organization and support of calibration campaigns, and the maintenance of a time laboratory equipped with atomic clocks, measurement systems, and GNSS receivers. The main activities of the last years, in collaboration with the National Metrology Institutes (NMI) and the CCTF Working Groups are mostly related to: 1. The preliminary tests for the inclusion of remote clock comparisons based on the GNSS Galileo and Beidou time transfer; 2. The support to the pilot project developing Software Defined Radio receivers to be used in the Two Way Time and Frequency Transfer, the tests on the use of these measures in the computation of UTC, and the support to the further development; 3. The development of a web page based on a newly devised data base containing information on UTC, the rapid version UTCr, the national time scales, calibrations reports, UTC disseminated by GNSS systems, ... 4. The study of the Integer Precise Point Position for high stability time transfer, in collaboration with the French Space Agency CNES and the French Centre National de Recherche Scientifique; 5. The study of the optimization of the parameters fixed in UTC calculation; 6. Inclusion of primary and secondary frequency standards in the steering of TAI. The BIPM has a program of collaborations with NMIs welcoming secondees for collaboration of short or long duration on the BIPM research program. The paper reports an update of all these activities.
机译：BIPM的时间部门负责通过每月通知T.计算和传播协调世界时期。为此目的，许多活动是必要的，从系统的数据收集，归档和处理的系统设置，为了开发新算法和数据处理测试，组织和支持校准活动，以及配备有原子钟，测量系统和GNSS接收器的时间实验室的维护。与国家计量机构（NMI）合作的最后几年的主要活动主要与：1。基于GNSS Galileo和Beidou时间转移将远程时钟比较列入的初步测试; 2.对试点项目开发软件定义的无线电接收器的支持在两种方式和频率传输中使用，测试对UTC的计算中的使用这些措施，以及进一步发展的支持; 3.基于新设计的数据库的网络页面的开发，其中包含关于UTC的信息，快速版UTCR，国家时间尺度，校准报告，由GNSS系统传播的UTC，......整数精确的研究高稳定时间转移的点位置，与法国空间局CNES和法国中心国家德尔科科学的合作; 5.研究UTC计算中固定参数的优化; 6.在Tai的转向上纳入初级和二级频率标准。 BIPM有一项与NMIS欢迎的合作计划，用于在BIPM研究计划上进行短暂或长期合作。本文报告了所有这些活动的更新。

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