A Revised Way of Fixing an Upper Limit to Clock Weights in TAI Computation

Abstract

The free atomic time scale Echelle Atomique Libre (EAL), from which International Atomic Time (TAI) is derived by frequency steering, is obtained as a weighted average of a large number of free-running and independent atomic clocks spread worldwide, using the algorithm ALGOS which is optimized for long-term stability. Since January 1998, a new procedure for implementing an upper limit of clock weights has been used.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 2001
Accession Number
ADA485082

Entities

People

  • J. Azoubib

Organizations

  • International Bureau of Weights and Measures

Tags

Communities of Interest

  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Algorithms
  • Atomic Beam Masers
  • Atomic Clocks
  • Clocks
  • Computational Processes
  • Computations
  • Dead Time
  • Discrimination
  • Frequency
  • Histograms
  • Hydrogen
  • Information Operations
  • Intervals
  • Masers
  • Mathematical Analysis
  • Noise Modulation
  • Time Intervals

Readers

  • Computational Modeling and Simulation
  • Positioning, Navigation, and Timing (PNT) Technology.