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International Time Comparison by TWSTFT and GPS at KRISS

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초록

In this paper, time comparison is performed with standardization institution in Japan using a Two-Way Satellite Time and Frequency Transfer (TWSTFT) technique as one of the methods for high precision time comparison. To analyze the performance of time comparison in the TWSTFT method, time comparison results via the Global Positioning System (GPS) code and carrier wave are analyzed. Through the time comparison performance, frequency stability is analyzed using modified Allan deviation and by this result, characteristics of time comparison of the TWSTFT that is utilized in international time comparison are presented.

Abstract

In this paper, time comparison is performed with standardization institution in Japan using a Two-Way Satellite Time and Frequency Transfer (TWSTFT) technique as one of the methods for high precision time comparison. To analyze the performance of time comparison in the TWSTFT method, time comparison results via the Global Positioning System (GPS) code and carrier wave are analyzed. Through the time comparison performance, frequency stability is analyzed using modified Allan deviation and by this result, characteristics of time comparison of the TWSTFT that is utilized in international time comparison are presented.

참고문헌 (7)

  1. Defraigne, P, "CGGTTS-Version 2E: an extended standard for GNSS Time Transfer", Metrologia, 52, pp.G1~ (2015)[DOI]
  2. JPL Orbiter and Radio Metric Systems Group, "technical document of Orbiter and Radio Metric Systems Group (GIPSY Ambiguity Resolution)", JPL documentation, ~ (2009)
  3. D. Kirchner, "Two-way time transfer via communication satellites", Proceedings of the IEEE, 79(7), pp.983~990 (1991), Institute of Electrical and Electronics Engineers (IEEE)[DOI]
  4. 이영규, "Evaluation of Daily Jump Compensation Methods for GPS Carrier Phase Data", Journal of Positioning, Navigation, and Timing, 4(1), pp.25~31 (2015), 사단법인 항법시스템학회[DOI]
  5. Piester, D, "Time transfer with nanosecond accuracy for the realization of International Atomic Time", Metrologia, 45, pp.185~198 (2008)
  6. "ITU-R TF.1153 2015, technical document of ITU-R (The operational use of two-way satellite time and frequency transfer employing pseudorandom noise codes), ITU-R TF.1153-4" (2015)[URL]
  7. Zhang, V, "Estimating the Receiver Delay for Ionosphere-free code (P3) Time Transfer", Proceeding of 38th Annual Precise Time and Time IntervalMeeting, pp.467~472 (2006)

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