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A Hydrogen Maser with Cavity Auto-Tuner for TimekeepingA hydrogen maser frequency standard for timekeeping was worked on at the Shanghai Observatory. The maser employs a fast cavity auto-tuner, which can detect and compensate the frequency drift of the high-Q resonant cavity with a short time constant by means of a signal injection method, so that the long term frequency stability of the maser standard is greatly improved. The cavity auto-tuning system and some maser data obtained from the atomic time comparison.
Document ID
19920024120
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
C. F. Lin (Shanghai Astronomical Observatory Shanghai, China)
J. W. He (Shanghai Astronomical Observatory Shanghai, China)
Z. C. Zhai (Shanghai Astronomical Observatory Shanghai, China)
Date Acquired
September 6, 2013
Publication Date
December 3, 1991
Publication Information
Publication: 23rd Annual Time and Time Precise Interval (PTTI) Applications and Planning Meeting
Publisher: National Aeronautics and Space Administration
Volume: 3159
Issue Publication Date: January 1, 1992
Subject Category
Lasers And Masers
Meeting Information
Meeting: 23rd Annual Precise Time and Time Interval (PTTI) Applications and Planning Meeting
Location: Pasadena, CA
Country: US
Start Date: December 3, 1991
End Date: December 5, 1991
Sponsors: United States Naval Observatory, Goddard Space Flight Center, Jet Propulsion Lab
Accession Number
92N33364
Distribution Limits
Public
Copyright
Portions of document may include copyright protected material.

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