Discussion of Clock Residuals in Developmental GPS Satellites Measured with a Single Channel Receiver

Abstract

The navigation potential of the NAVSTAR GPS system is integrally dependent on the ability to make accurate time transfer measurement. Examination of the clock offset data from several of the developmental GPS satellites shows systematic trends of unknown origin. By eliminating residual noise, a periodic behavior with a magnitude on the order of 30 to 50 nanoseconds is observed. A few possible sources of error, including improper application of relativistic calculations and limitations of the orbital and ionospheric models, are discussed.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1985
Accession Number
ADA494375

Entities

People

  • Steven D. Chang
  • Timothy D. Maclay

Tags

Communities of Interest

  • Space

DTIC Thesaurus Topics

  • Abstracts
  • Artificial Satellites
  • Circular Orbits
  • Clocks
  • Engineering
  • Errors
  • Frequency
  • Global Positioning Systems
  • Ionospheric Models
  • Mathematical Models
  • Measurement
  • Models
  • Nanosecond Time
  • Navigation
  • Orbital Elements
  • Random Walk
  • Residuals

Fields of Study

  • Physics

Readers

  • Positioning, Navigation, and Timing (PNT) Technology.
  • Software Engineering
  • Statistical inference.

Technology Areas

  • Space
  • Space - Orbital Debris