Analysis Noise, Short-Baseline Time Transfer, and a Long-Baseline GPS Carrier-Phase Frequency Scale

Abstract

The calibrated carrier-phase GPS technique promises time transfer between remote sites with 5-minute precision approaching 20 ps. Uncalibrated time transfers between many sites are routinely made available by the Earth Orientation Department of the U.S. Naval Observatory (USNO). Although important technical issues involving long-term accuracy and calibration are still being resolved, it is possible to generate sample time and frequency scales so as to anticipate the full power of the technique. Using minor extensions of the USNO's postprocessed extended-Percival algorithm SuperP, a carrier-phase-based frequency scale is generated and compared to local USNO timescales.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1999
Accession Number
ADA497300

Entities

People

  • Demetrios N. Matsakis
  • K. Senior
  • Lee A. Breakiron

Organizations

  • United States Naval Observatory

Tags

Communities of Interest

  • Energy and Power Technologies
  • Materials and Manufacturing Processes
  • Space

DTIC Thesaurus Topics

  • Accuracy
  • Algorithms
  • Boundaries
  • Cables
  • Clocks
  • Coaxial Cables
  • Data Analysis
  • Data Reduction
  • Errors
  • Fiber Optics
  • Frequency
  • Intervals
  • Measurement
  • Optics
  • Seasonal Variations
  • Test Beds
  • Time Intervals

Readers

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

Technology Areas

  • Space