Abstract
The National Physical Laboratory, India (NPLI), is responsible for maintenance and development of the Indian Standard Time (IST) and also contributes through the GPS network to the generation of UTC coordinated by BIPM. Recently NPLI has made some special efforts to improve the uncertainty of UTC(NPLI) with respect to UTC. One basic clock ensemble algorithm is implemented to make the time scale of UTC(NPLI) by combining the intercomparison data of five caesium clocks. Some initial tests have been carried out to check the validity of this algorithm. The recent UTC − UTC(NPLI) values (shown in Circular T) and the corresponding frequency offset with respect to UTC have exhibited significant improvements. This paper describes these studies and presents the analysis of these observations.
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