Accession Number:

ADA639346

Title:

Activities at the State Time and Frequency Standard of Russia

Descriptive Note:

Conference paper

Corporate Author:

INSTITUTE OF METROLOGY FOR TIME AND SPACE MENDELEEVO (RUSSIA

Report Date:

2010-11-01

Pagination or Media Count:

12.0

Abstract:

A campaign on the State Time and Frequency Standard modernization is continuing. A second prototype of the primary Cs fountain standard with an uncertainty of 5 10exp -16 is under assemblage and is scheduled to be ready by the end of 2011. Today, we have two new ensembles each of four H-masers of type CH1-75A with individual cavity auto-tuning systems. The whole instrumentation set includes distribution amplifiers, a frequency and time measuring system, and a real-time scale generation and distribution system. All these instruments are installed in thermally and humidity controlled chambers. As a result, the frequency stability of H-masers for a 1-day basis is about a few parts in 10exp -16. The new remote clock comparison system consists of several multichannel dual-frequencys GLONASSGPS TTS-3 receivers. A new GLONASSGPSGALILEO TTS-4 receiver is expected by the end of November. All TTS-3 receivers were differentially calibrated relative to BIPMs portable receiver last year. Just now, we have completed new measurements within a new calibration campaign arranged by the BIPM. Two TWSTFT stationary stations and a transportable one were tested in VNIIFTRI last summer. VNIIFTRI is ready to join the Europe-Asia link via the AM-2 satellite when it receives a radio license. During the last year, considerable changes have happened in the secondary laboratories in Khabarovsk and Petropavlovsk Kamchatsky. The paper delivers somewhat detailed information and some preliminary results.

Subject Categories:

  • Test Facilities, Equipment and Methods

Distribution Statement:

APPROVED FOR PUBLIC RELEASE