Activities and Updates at the State Time and Frequency Standard of Russia
Abstract
As it was announced, a campaign on the State Time and Frequency Standard modernization is under realization. A new prototype of the primary Cs fountain standard with an uncertainty of 3x10(-15) is under metrological investigation, which is expected to be finished at the end of 2009. For today, we have two new ensembles each of four H-masers of type of 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 time scale generation and distributing system. All these instruments are installed in thermally and humidity controlled chambers. Typical temperature and relative humidity variations are well below 0.1 degrees C and approximately 1% respectively. As a result, the frequency stability of the H-masers on a 1-day basis is about few parts in 10(16). The new remote clock comparison system consists of several multichannel dual-frequency GLONASS/GPS TTS-3 receivers. All receivers have been differentially calibrated relative to a portable receiver as part of a calibration campaign arranged by the BIPM. A TWSTFT station is under construction in VNIIFTRI. The closest main goal is to arrange a time link to PTB and NICT via the IS-4 satellite. The same instrumentation set (four H-masers, a frequency and time measuring system, and time transfer equipment) will be installed in secondary laboratories in Novosibirsk, Irkutsk, Khabarovsk, and Petropavlovsk Kamchatsky.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 2009
- Accession Number
- ADA518074
Entities
People
- N. Koshelyaevsky
- P. Krasovsky
- V. Kostromin
- V. Palchikov
- Y. Domnin