Update on Time and Frequency Activities at NIST

Abstract

The mission and organization of the Time and Frequency Division of the National Institute of Standards and Technology (NIST) are reviewed and a discussion is presented of recent activities. Among the major recent milestones have been the development of cold-atom frequency standards, including the construction of a new cesium-fountain frequency standard and the design of a standard for operation on the International Space Station. In addition, the use of GPS carrier phase for frequency transfer at the 1 x 10(exp -15) level has been demonstrated, and the power radiated by WWVB has been increased to 50 kW. Other areas discussed include time scales, time transfer, optical frequency standards, and time and frequency dissemination services.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1999
Accession Number
ADA495396

Entities

People

  • D. B. Sullivan
  • T. E. Parker

Organizations

  • National Institute of Standards and Technology

Tags

Communities of Interest

  • Energy and Power Technologies
  • Space

DTIC Thesaurus Topics

  • Accuracy
  • Amplifiers
  • Artificial Satellites
  • Chemical Reactions
  • Clocks
  • Communication Systems
  • Frequency
  • Frequency Combs
  • Frequency Standards
  • Ion Traps
  • Jet Propulsion
  • Laser Diodes
  • Lasers
  • Measurement
  • Oscillators
  • Standards
  • Test And Evaluation

Readers

  • Positioning, Navigation, and Timing (PNT) Technology.

Technology Areas

  • Space