NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Collections About News Help Login
Back to Results
Comparison of two-way satellite time transfer and GPS common-view time transfer between OCA and TUGFor about one year the time scales UTC(OCA) and UTC(TUG) were compared by means of GPS and two-way satellite time transfer. At the end of the experiment both links were independently 'calibrated' by measuring the differential delays of the GPS receivers and of the satellite earth stations by transportation of a GPS receiver and of one of the satellite terminals. The results obtained by both methods differ by about 3 ns, but reveal a seasonal variation of about 8 ns peak-to-peak which is likely the result of a temperature-dependence of the delays of the GPS receivers used. For the comparison of both methods the stabilities of the timescales are of great importance. Unfortunately, during the last three months of the experiment a less stable clock had to be used for the generation of UTC(TUG).
Document ID
19920024112
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
D. Kirchner (Graz University of Technology Graz, Austria)
U. Thyr (Graz University of Technology Graz, Austria)
H. Ressler (Space Research Institute Graz, Austria)
R. Robnik (Space Research Institute Graz, Austria)
P. Grudler (Observatoire de la Côte d’Azur Nice, France)
F. Baumont (Observatoire de la Côte d’Azur Nice, France)
Ch. Veillet (Observatoire de la Côte d’Azur Nice, France)
W. Lewandowski (International Bureau of Weights and Measures Saint-Cloud, France)
W. Hanson (National Institute of Standards and Technology Gaithersburg, Maryland, United States)
A. Clements (National Institute of Standards and Technology Gaithersburg, Maryland, United States)
J. Jespersen (National Institute of Standards and Technology Gaithersburg, Maryland, United States)
D. Howe (National Institute of Standards and Technology Gaithersburg, Maryland, United States)
M. Lombardi (National Institute of Standards and Technology Gaithersburg, Maryland, United States)
W. Klepczynski (United States Naval Observatory Washington D.C., District of Columbia, United States)
P. Wheeler (United States Naval Observatory Washington D.C., District of Columbia, United States)
W. Powell (United States Naval Observatory Washington D.C., District of Columbia, United States)
A. Davis (United States Naval Observatory Washington D.C., District of Columbia, United States)
P. Uhrich (Laboratoire Primaire du Temps et des Fréquences)
R. Tourde (Laboratoire Primaire du Temps et des Fréquences)
M. Granveaud (Laboratoire Primaire du Temps et des Fréquences)
Date Acquired
September 6, 2013
Publication Date
December 3, 1991
Publication Information
Publication: 23rd Annual Time and Time Precise Interval (PTTI) Applications and Planning Meeting
Publisher: National Aeronautics and Space Administration
Volume: 3159
Issue Publication Date: January 1, 1992
Subject Category
Aircraft Communications And Navigation
Meeting Information
Meeting: 23rd Annual Precise Time and Time Interval (PTTI) Applications and Planning Meeting
Location: Pasadena, CA
Country: US
Start Date: December 3, 1991
End Date: December 5, 1991
Sponsors: United States Naval Observatory, Goddard Space Flight Center, Jet Propulsion Lab
Accession Number
92N33356
Distribution Limits
Public
Copyright
Portions of document may include copyright protected material.

Related Records

IDRelationTitle19920024106Work23rd Annual Time and Time Precise Interval (PTTI) Applications and Planning Meeting
No Preview Available