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Precise time dissemination via portable atomic clocksThe most precise operational method of time dissemination over long distances presently available to the Precise Time and Time Interval (PTTI) community of users is by means of portable atomic clocks. The Global Positioning System (GPS), the latest system showing promise of replacing portable clocks for global PTTI dissemination, was evaluated. Although GPS has the technical capability of providing superior world-wide dissemination, the question of present cost and future accessibility may require a continued reliance on portable clocks for a number of years. For these reasons a study of portable clock operations as they are carried out today was made. The portable clock system that was utilized by the U.S. Naval Observatory (NAVOBSY) in the global synchronization of clocks over the past 17 years is described and the concepts on which it is based are explained. Some of its capabilities and limitations are also discussed.
Document ID
19820012622
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Putkovich, K.
(Naval Observatory Washington, DC, United States)
Date Acquired
August 10, 2013
Publication Date
March 1, 1982
Publication Information
Publication: NASA. Goddard Space Flight Center Proc. of the 13th Ann. Precise Time and Time Interval (PTTI) Appl. and Planning Meeting
Subject Category
Lasers And Masers
Accession Number
82N20496
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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