Development of Multichannel Dual-Mixer Time Difference System to Generate UTC (NICT)
Abstract
A multichannel dual-mixer time difference (DMTD) system has been developed by the National Institute of Information and Communications Technology (NICT) for a measurement system to generate the UTC(NICT) time scale based on Coordinated Universal Time (UTC). This system measures time differences between a reference signal and 24 device under test (DUT) signals, simultaneously. We have confirmed that this system has enough accuracy to measure hydrogen maser and cesium clocks at an averaging time of 1 s.
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The optical link contributes less than 1 × 10^-18 after 1000 s of averaging time.
“In these conditions, the optical link contributes less than 1 × 10 -18 after 1000 s of averaging time 41,83 .”
From Intercontinental comparison of optical atomic clocks through very long baseline interferometry (2021) · cites this paper as [83]
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References 6 · Cited by 24
- Authors
- Nakagawa, F., Imae, M., Hanado, Y., & Aida, M.
- Affiliations
- National Institute of Information and Communications Technology (JP)
- National Metrology Institute of Japan (JP)
- Venue
- IEEE Transactions on Instrumentation and Measurement
- Published
- 2005-04
- Volume
- 54
- Issue
- 2
- Pages
- 829-832
- ISSN
- 0018-9456 (ISSN-L)
- OpenAlex
- W2119300451
- Cited by
- 24
- References
- 6
- Citations by year
- 2025: 1 · 2024: 2 · 2023: 1 · 2020: 2 · 2019: 1 · 2018: 2 · 2017: 3 · 2015: 2 · 2012: 3
- FWCI
- 1.23
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- IEEE Transactions on Instrumentation and Measurement (publishedVersion)
- Funders
- National Institute of Information and Communications Technology
- Topics
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Advanced Frequency and Time Standards
- Physical Sciences › Computer Science › Computer Networks and Communications › Network Time Synchronization Technologies
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Advanced Electrical Measurement Techniques
- Keywords
- time difference measurement, multi-channel measurement, Coordinated Universal Time, hydrogen maser, cesium atomic clock
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