Least-Squares Analysis of Two-Way Satellite Time and Frequency Transfer Measurements

Abstract

The least-squares analysts of Two-Way Satellite Time and Frequency (TWSTFT) data, with the aim of determining optimal estimates of phase and frequency offsets, is considered. An overview of the application of Gauss-Markov estimation to the analysts of a uniformly spaced time series is presented. Two aspects of TWSTFT data analysis are examined in depth. Firstly, measures based on second difference statistics for characterizing the consistently but unevenly spaced TWSTFT measurements are introduced. Secondly, an approach to the estimation of the occasional and unknown delay steps in TWSTFT data, for example due to hardware replacement, is presented.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 2002
Accession Number
ADA485223

Entities

People

  • J. A. Davis
  • M. G. Cox
  • P. M. Harris
  • S. L. Shemar

Organizations

  • National Physical Laboratory

Tags

DTIC Thesaurus Topics

  • Artificial Satellites
  • Chebyshev Polynomials
  • Clocks
  • Communication Satellites
  • Covariance
  • Data Analysis
  • Frequency
  • Frequency Modulation
  • Information Science
  • Measurement
  • Modulation
  • Numerical Analysis
  • Phase
  • Phase Modulation
  • Polynomials
  • Statistics
  • Time Intervals

Readers

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

Technology Areas

  • Space