Analysis of One Year of Zero-Baseline GPS Common-View Time Transfer and Direct Measurement Using Two Co-Located Clocks

Abstract

As part of the Galileo project of Early Trials on Time Synchronization Techniques and Calibration Issues, the (near) zero-baseline GPS Common-View Time Transfer and Direct Measurement (using a Time Interval Counter) results between the time scales of two co-located clocks during 2001 were analyzed. This was done to identify the obtainable uncertainty levels with these techniques. The result of the analysis is presented. The baseline of the antennas of the two single-channel NBS-type GPS C-V receivers was 2 m, so multi-path influence is not excluded. The uncertainties from statistical origin "Type A evaluation" were determined by means of MDEV and TDEV. The uncertainties from other sources "Type B evaluation" were determined from calibrations. The TDEV of the GPS C-V result was less than 0.4 ns at averaging times > 1 day, and at shorter averaging times TDEV was about 1 ns.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 2002
Accession Number
ADA484930

Entities

People

  • Erik Kroon
  • Gerrit De Jong

Tags

Communities of Interest

  • Space

DTIC Thesaurus Topics

  • Accuracy
  • Calibration
  • Clocks
  • Counters
  • Intervals
  • Measurement
  • Satellite Orbits
  • Statistical Analysis
  • Temperature Coefficients
  • Test And Evaluation
  • Time Interval Counters
  • Time Intervals
  • Uncertainty

Readers

  • Positioning, Navigation, and Timing (PNT) Technology.
  • Systems Analysis and Design

Technology Areas

  • Space