On the Improvements and Suggestions of GPS Common-View With Multichannel Time Receivers - First Results

Joerg Hahn, Hartmut Nau, Philippe Moussay

Abstract:	At present time the international timing community has access to multichannel GPS and GLONASS time receivers. This new generation of time receivers offers a great potential to time users and timing labs can benefit from. One advantage is the continuous monitoring of the satellite clocks with the possibility for easy implementation of an international tracking schedule which need not be updated. Otherwise the user can perform study work in changing various processing parameters. If one uses high rate data (ie. at one-second sample rate), investigations can be done in much more detail. This also leads into application of carrier phase observable if the receiver is capable for such measurements. In this paper we give first results of ”Common View” clock synchronization between DLR and BIPM using AOA TTR-4P GPS time receivers with GGTTS data format version I output. Due to repeated problems with the BIPM receiver, NPL supported us with corresponding data files. C/A-code measurements have been analyzed and compared to data with usual one-channel receivers. Both results have been analyzed in view of precision and availability of synchronization data. Recommendations will be given for application of multichannel receivers for clock synchronization. It will be concluded that such receivers will certainly have a large impact for future clock synchronization, and far more investigation work is still required.
Published in:	Proceedings of the 29th Annual Precise Time and Time Interval Systems and Applications Meeting December 2 - 4, 1997 Sheraton Long Beach Hotel Long Beach, California
Pages:	287 - 298
Cite this article:	Hahn, Joerg, Nau, Hartmut, Moussay, Philippe, "On the Improvements and Suggestions of GPS Common-View With Multichannel Time Receivers - First Results," Proceedings of the 29th Annual Precise Time and Time Interval Systems and Applications Meeting, Long Beach, California, December 1997, pp. 287-298.
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