Study of Tropospheric Correction for Intercontinental GPS Common-View Time Transfer

Abstract

Current practice is to incorporate general empirical models of the troposphere, which depend only on the station height and the elevation of the satellite, in GPS time receivers used for common-view time transfer. Comparisons of these models with a semi-empirical model based on weather measurements show differences of several nanoseconds. This paper reports on a study of tropospheric correction during GPS common-view time transfer over a short baseline of about 700 km, and three long baselines of 6400 km, 9000 km and 9600 km. It is shown that the use of a general empirical model of the troposphere within a region where the climate is similar does not affect time transfer by more than a few hundreds of picoseconds. For the long distance links, differences between the use of general empirical model and the use of a semi-empirical model reach several nanoseconds.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1994
Accession Number
ADA500252

Entities

People

  • F. Baumont
  • M. Imae
  • M. Miranian
  • P. Gruedler
  • W. J. Klepczynski
  • Wlodzimierz Lewandowski

Organizations

  • International Bureau of Weights and Measures

Tags

Communities of Interest

  • Space

DTIC Thesaurus Topics

  • Accuracy
  • Artificial Satellites
  • Barometric Pressure
  • Clocks
  • Elevation
  • Frequency
  • High Altitude
  • Humidity
  • Jet Propulsion
  • Line Of Sight
  • Low Elevation
  • Measurement
  • Meteorological Data
  • Radio Frequency
  • Standards
  • Time Intervals
  • United States

Readers

  • Computational Modeling and Simulation
  • Positioning, Navigation, and Timing (PNT) Technology.

Technology Areas

  • Space