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Title

Results From Proof-Of-Concept Time-Based Communications Testing

Identifier

ADA500803

STOAbstractExternal

This paper presents the results of the time-based communications testing performed at Lincoln Labs (MIT/LL) using an Optical Two-Way Time Transfer Communications System. A short explanation of system design and two-way time transfer implementation in a communications channel will be followed by a presentation of data sets from the Lincoln Laboratory testing. Time transfer measurement data will be presented from tests conducted from within the laboratory, as well as tests conducted over long-distance, outdoor links. The laboratory measurements to be presented include two-way time transfer results over fiber in a controlled (constant temperature) environment with typical communications hardware inserted in the link between clocks. The hardware used for laboratory measurements includes electro-optic repeaters and erbium-doped fiber-optic amplifiers. The outdoor fiber links (intended to represent real-world links) include a 75-km fiber run with OC-3 repeaters inserted at the midpoint, and 100-km with wave-division multiplexing equipment in the link. Synchronization error measurement data are presented for each test configuration. Two-way delay data will be presented for the real world links to show the changes in fiber length induced by temperature variations in the outdoor environment.

STOAuthorExternal

TIMING SOLUTIONS CORP BOULDER CO,Celano, T. P., Stein, Sam R., Gifford, G. A., Swanson, E. A., Hemenway, Jr., B. R., Carney, J. C.

STOClassificationExternal

STOKeywordsExternal

OPTICAL TWO WAY TIME TRANSFER, TIME TRANSFER, PRECISE TIME

STOPublisher

USA

Language

English

STOReportSource

http://www.dtic.mil/docs/citations/ADA500803

Published

12/1/1997