The Effects of Clock Errors on Timescale Stability

Abstract

The weighting scheme for the cesium clocks and hydrogen masers constituting the USNO timing ensemble is reexamined from an empirical standpoint of maximizing both frequency accuracy and timescale uniformity. The utility of a sliding-weight relation between the masers and the cesiums is reaffirmed, but improvement is found if one incorporates inverse Allan variances for sampling times of 12 and 6 hours for the cesiums and masers, respectively, with some dependence on clock model.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1994
Accession Number
ADA494733

Entities

People

  • Lee A. Breakiron

Organizations

  • United States Naval Observatory

Tags

DTIC Thesaurus Topics

  • Accuracy
  • Acquisition
  • Algorithms
  • Atomic Beam Masers
  • Change Detection
  • Clocks
  • Computations
  • Data Acquisition
  • Errors
  • Frequency
  • Frequency Standards
  • Hydrogen
  • Intervals
  • Kalman Filters
  • Measurement
  • Standards
  • Time Intervals

Readers

  • Electronics Engineering
  • Positioning, Navigation, and Timing (PNT) Technology.
  • Theoretical Analysis.