학술논문

Time transfer using an asynchronous computer network: Results from three weeks of measurements
Document Type
Conference
Source
2007 IEEE International Frequency Control Symposium Joint with the 21st European Frequency and Time Forum Frequency Control Symposium, 2007 Joint with the 21st European Frequency and Time Forum. IEEE International. :323-326 May, 2007
Subject
Communication, Networking and Broadcast Technologies
Components, Circuits, Devices and Systems
Computing and Processing
Signal Processing and Analysis
Robotics and Control Systems
Power, Energy and Industry Applications
Computer networks
Time measurement
Synchronous digital hierarchy
Data communication
Optical fiber networks
Bandwidth
Atomic clocks
Global Positioning System
Atomic measurements
Communications technology
Language
ISSN
2327-1914
2327-1949
Abstract
We have performed a time transfer experiment between two atomic clocks, over a distance of approximately 75 km using an 10 Gbit/s asynchronous fiber-optic computer network. The time transfer was accomplished through passive listening on existing data traffic and a pilot sequence in the SDH bit stream. In order to assess the fiber-link clock comparison, we simultaneously compared the clocks using a GPS carrier phase link. The standard deviation of the difference between the two time transfer links over the three-week time period was 243 ps.