Hydrogen maser performance at the United States Naval Observatory and the Naval Research Laboratory

Author

Powers, E. ; Gifford, A. ; Wheeler, P.

Author_Institution

US Naval Res. Lab., Washington, DC, USA

fYear

1991

fDate

29-31 May 1991

Firstpage

582

Lastpage

585

Abstract

The United States Naval Observatory (USNO) has been using hydrogen masers for over six years as part of the USNO master clock. The Naval Research Laboratory (NRL) has also been using maser references as part of the NRL clock testing facility since September 1985. The masers discussed include the Smithsonian Astrophysical Observatory VLG-11, VLG-12, and masers from the Sigma Tau Standards Corporation. The authors describe the operation of the masers at USNO and NRL, including stability, aging rates, and reliability

Keywords

ageing; atomic clocks; frequency measurement; frequency stability; hydrogen; masers; measurement standards; reliability; H masers; Naval Research Laboratory; Sigma Tau Standards Corporation; Smithsonian Astrophysical Observatory; USNO master clock; United States Naval Observatory; VLG-11; VLG-12; aging rates; clock testing facility; frequency standards; operation; reliability; stability; Clocks; Extraterrestrial measurements; Frequency estimation; Hydrogen; Laboratories; Masers; Observatories; Stability; Testing; Time measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Frequency Control, 1991., Proceedings of the 45th Annual Symposium on

Conference_Location

Los Angeles, CA

Print_ISBN

0-87942-658-6

Type

conf

DOI

10.1109/FREQ.1991.145954

Filename

145954