Comparison of the One-Way and Commonview GPS Measurement Techniques Using a Known Frequency Offset

Michael A. Lombardi, Andrew N. Novick

Abstract:	Calibration and testing laboratories are seldom required to measure or certify signals with frequency offsets smaller than 1 × 10-12. To compare the suitability of the one-way and common-view measurement techniques for calibration laboratories, we generate a 10 MHz test signal with a frequency offset of 10 µHz (1 × 10-12 offset) with respect to the UTC (NIST) time scale. We then compare the 10 MHz test signal directly to UTC (NIST) with a time interval counter, to the Global Positioning System (GPS) using the one-way measurement technique, and to UTC (NIST) using a multi-channel all-in-view common-view GPS measurement technique over a baseline of 6.2 m. The experiment is repeated using test signals with 4 µHz (4 × 10-13) and 1 µHz (1 × 10-13) frequency offsets, and the results are summarized and compared.
Published in:	Proceedings of the 34th Annual Precise Time and Time Interval Systems and Applications Meeting December 3 - 5, 2002 Hyatt Regency Reston Town Center Reston, Virginia
Pages:	39 - 51
Cite this article:	Lombardi, Michael A., Novick, Andrew N., "Comparison of the One-Way and Commonview GPS Measurement Techniques Using a Known Frequency Offset," Proceedings of the 34th Annual Precise Time and Time Interval Systems and Applications Meeting, Reston, Virginia, December 2002, pp. 39-51.
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