A NEW TWO-WAY TIME TRANSFER MODEM

G.P. Landis, J.D. White, A. Gifford, R.L. Beard, J.A. Murray

Abstract: The use of commercial communications satellites for precise time transfer has been performed with a variety of techniques for a number of years. Military communications systems can also provide this function in a few deployed systems. This paper will describe a new design of a time transfer modem that can be produced a reasonable cost and enable users to make direct comparisons with the Naval Observatory with nanosecond precision. A flexible, all-digital design is being implemented that will enable a variety of different codes to be employed. Compatibility with existing equipment, such as the HARTL Modem, is a goal of this development. The design and operating modes of this equipment will be described.
Published in: Proceedings of the 21th Annual Precise Time and Time Interval Systems and Applications Meeting
November 28 - 30, 1989
Sheraton Hotel
Redondo Beach, California
Pages: 131 - 138
Cite this article: Landis, G.P., White, J.D., Gifford, A., Beard, R.L., Murray, J.A., "A NEW TWO-WAY TIME TRANSFER MODEM," Proceedings of the 21th Annual Precise Time and Time Interval Systems and Applications Meeting, Redondo Beach, California, November 1989, pp. 131-138.
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