Attenuating Day-Boundary Discontinuities in GPS Carrier-Phase Time Transfer

Abstract

Many IGS analysis centers show 1-nanosecond-level discontinuities across processing boundaries in their GPS carrier-phase time-transfer (GPSCPTT) solutions. Though these discontinuities reflect the nature of processing the GPS data, generally in 1-day batches, this paper tests the hypothesis that, with slight modifications in the standard filtering process, one might improve the degrees of freedom with respect to phase ambiguity parameters in such a way as to improve the time-transfer solutions and attenuate most of the discontinuities.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1999
Accession Number
ADA490829

Entities

People

  • Demetrios N. Matsakis
  • Ed Powers
  • K. Senior

Organizations

  • United States Naval Observatory

Tags

Communities of Interest

  • Space

DTIC Thesaurus Topics

  • Accuracy
  • Ambiguity
  • Artificial Satellites
  • Batch Processing
  • Boundaries
  • Clocks
  • Covariance
  • Discontinuities
  • Errors
  • Filters
  • Filtration
  • Global Positioning Systems
  • Intervals
  • Jet Propulsion
  • Nanosecond Time
  • Navigation
  • Time Intervals

Readers

  • Fluid Dynamics.
  • Positioning, Navigation, and Timing (PNT) Technology.
  • Spectroscopy.

Technology Areas

  • Space