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Preliminary Comparison of Two-Way Satellite Time and Frequency Transfer and GPS Common-View Time Transfer During the INTELSAT Field TrialFor a decade and a half Global Positioning System (GPS) common-view time transfer has greatly served the needs of primary timing laboratories for regular intercomparisons of remote atomic clocks. However, GPS as a one-way technique has natural limits and may not meet all challenges of the comparison of the coming new generation of atomic clocks. Two-way satellite time and frequency transfer (TWSTFT) is a promising technique which may successfully complement GPS. For two years, regular TWSTFT's have been performed between eight laboratories situated in both Europe and North America, using INTELSAT satellites. This has enabled an extensive direct comparison to be made between these two high performance time transfer methods. The performance of the TWSTFT and GPS common view methods are compared over a number of time-transfer links. These links use a variety of time-transfer hardware and atomic clocks and have baselines of substantially different lengths. The relative merits of the two time-transfer systems are discussed.
Document ID
19960042641
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
Davis, John A.
(National Physical Lab. Teddington, United Kingdom)
Lewandowski, W.
(Bureau International des Poids et Mesures Sevres, France)
DeYoung, James A.
(Naval Observatory Washington, DC United States)
Kirchner, Dieter
(Technische Univ. Graz, Austria)
Hetzel, Peter
(Physikalisch-Technische Bundesanstalt Brunswick, Germany)
deJong, Gerrit
(Nederlands Meetinst. Delft, Netherlands)
Soering, A.
(Deutsche Telekom Darmstadt, Germany)
Baumont, F.
(Observatoire de la Cote d'Azur Grasse, France)
Klepczynski, William
(Naval Observatory Washington, DC United States)
McKinley, Angela Davis
(Naval Observatory Washington, DC United States)
Parker, Thomas E.
(National Inst. of Standards and Technology Boulder, CO United States)
Bartle, K. A.
(National Physical Lab. Teddington, United Kingdom)
Ressler, Hubert
(Technische Hochschule Graz, Austria)
Robnik, R.
(Technische Hochschule Graz, Austria)
Veenstra, L.
(Radarsat International, Inc. Bethesda, MD United States)
Date Acquired
August 17, 2013
Publication Date
May 1, 1996
Publication Information
Publication: 27th Annual Precise Time and Time Interval (PTTI) Applications and Planning Meeting
Subject Category
Physics (General)
Accession Number
96N31604
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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